remove extern-wrapped and export extern-wrapped (#11000)

follow-up to
- https://github.com/nushell/nushell/pull/10716

> **Important**
> wait for between 0.87 and 0.88 to land this

# Description
it's time for removal again 😋 
this PR removes `extern-wrapped` and `export extern-wrapped` in favor of
`def --wrapped`

# User-Facing Changes
`extern-wrapped` and `export extern-wrapped` will not be found anymore.

# Tests + Formatting

# After Submitting

crates/nu-cmd-lang/src/core_commands/export_extern_wrapped.rs

@@ -1,66 +0,0 @@
-use nu_protocol::ast::Call;
-use nu_protocol::engine::{Command, EngineState, Stack};
-use nu_protocol::{Category, Example, PipelineData, ShellError, Signature, SyntaxShape, Type};
-
-#[derive(Clone)]
-pub struct ExportExternWrapped;
-
-impl Command for ExportExternWrapped {
-    fn name(&self) -> &str {
-        "export extern-wrapped"
-    }
-
-    fn usage(&self) -> &str {
-        "Define an extern with a custom code block and export it from a module."
-    }
-
-    fn signature(&self) -> nu_protocol::Signature {
-        Signature::build("export extern-wrapped")
-            .input_output_types(vec![(Type::Nothing, Type::Nothing)])
-            .required("def_name", SyntaxShape::String, "definition name")
-            .required("params", SyntaxShape::Signature, "parameters")
-            .required("body", SyntaxShape::Block, "wrapper code block")
-            .category(Category::Core)
-    }
-
-    fn extra_usage(&self) -> &str {
-        r#"This command is a parser keyword. For details, check:
-  https://www.nushell.sh/book/thinking_in_nu.html"#
-    }
-
-    fn is_parser_keyword(&self) -> bool {
-        true
-    }
-
-    fn run(
-        &self,
-        engine_state: &EngineState,
-        _stack: &mut Stack,
-        call: &Call,
-        _input: PipelineData,
-    ) -> Result<PipelineData, ShellError> {
-        nu_protocol::report_error_new(
-            engine_state,
-            &ShellError::GenericError(
-                "Deprecated command".into(),
-                "`export extern-wrapped` is deprecated and will be removed in 0.88.".into(),
-                Some(call.head),
-                Some("Use `export def --wrapped` instead".into()),
-                vec![],
-            ),
-        );
-        Ok(PipelineData::empty())
-    }
-
-    fn examples(&self) -> Vec<Example> {
-        vec![Example {
-            description: "Export the signature for an external command",
-            example: r#"export extern-wrapped my-echo [...rest] { echo $rest }"#,
-            result: None,
-        }]
-    }
-
-    fn search_terms(&self) -> Vec<&str> {
-        vec!["signature", "module", "declare"]
-    }
-}

crates/nu-cmd-lang/src/core_commands/extern_wrapped.rs

@@ -1,75 +0,0 @@
-use nu_protocol::ast::Call;
-use nu_protocol::engine::{Command, EngineState, Stack};
-use nu_protocol::{
-    Category, Example, PipelineData, ShellError, Signature, SyntaxShape, Type, Value,
-};
-
-#[derive(Clone)]
-pub struct ExternWrapped;
-
-impl Command for ExternWrapped {
-    fn name(&self) -> &str {
-        "extern-wrapped"
-    }
-
-    fn usage(&self) -> &str {
-        "Define a signature for an external command with a custom code block."
-    }
-
-    fn signature(&self) -> nu_protocol::Signature {
-        Signature::build("extern-wrapped")
-            .input_output_types(vec![(Type::Nothing, Type::Nothing)])
-            .allow_variants_without_examples(true)
-            .required("def_name", SyntaxShape::String, "definition name")
-            .required("params", SyntaxShape::Signature, "parameters")
-            .required("body", SyntaxShape::Block, "wrapper code block")
-            .category(Category::Core)
-    }
-
-    fn extra_usage(&self) -> &str {
-        r#"This command is a parser keyword. For details, check:
-  https://www.nushell.sh/book/thinking_in_nu.html"#
-    }
-
-    fn is_parser_keyword(&self) -> bool {
-        true
-    }
-
-    fn run(
-        &self,
-        engine_state: &EngineState,
-        _stack: &mut Stack,
-        call: &Call,
-        _input: PipelineData,
-    ) -> Result<PipelineData, ShellError> {
-        nu_protocol::report_error_new(
-            engine_state,
-            &ShellError::GenericError(
-                "Deprecated command".into(),
-                "`extern-wrapped` is deprecated and will be removed in 0.88.".into(),
-                Some(call.head),
-                Some("Use `def --wrapped` instead".into()),
-                vec![],
-            ),
-        );
-        Ok(PipelineData::empty())
-    }
-
-    fn examples(&self) -> Vec<Example> {
-        vec![Example {
-            description: "Define a custom wrapper for an external command",
-            example: r#"extern-wrapped my-echo [...rest] { echo $rest }; my-echo spam"#,
-            result: Some(Value::test_list(vec![Value::test_string("spam")])),
-        }]
-    }
-}
-
-#[cfg(test)]
-mod test {
-    #[test]
-    fn test_examples() {
-        use super::ExternWrapped;
-        use crate::test_examples;
-        test_examples(ExternWrapped {})
-    }
-}

crates/nu-cmd-lang/src/core_commands/mod.rs

@@ -15,11 +15,9 @@ mod export_const;
 mod export_def;
 mod export_def_env;
 mod export_extern;
-mod export_extern_wrapped;
 mod export_module;
 mod export_use;
 mod extern_;
-mod extern_wrapped;
 mod for_;
 mod hide;
 mod hide_env;
@@ -56,11 +54,9 @@ pub use export_const::ExportConst;
 pub use export_def::ExportDef;
 pub use export_def_env::ExportDefEnv;
 pub use export_extern::ExportExtern;
-pub use export_extern_wrapped::ExportExternWrapped;
 pub use export_module::ExportModule;
 pub use export_use::ExportUse;
 pub use extern_::Extern;
-pub use extern_wrapped::ExternWrapped;
 pub use for_::For;
 pub use hide::Hide;
 pub use hide_env::HideEnv;

crates/nu-cmd-lang/src/default_context.rs

@@ -33,11 +33,9 @@ pub fn create_default_context() -> EngineState {
             ExportDef,
             ExportDefEnv,
             ExportExtern,
-            ExportExternWrapped,
             ExportUse,
             ExportModule,
             Extern,
-            ExternWrapped,
             For,
             Hide,
             HideEnv,