Remove math eval command (#7284)

Reasoning: 

Most missing math commands are implemented with #7258.
The `meval` crate itself declares that it doesn't strive to stringent
standards (https://docs.rs/meval/latest/meval/#related-projects).
For example no particular special casing or transformations are
performed to ensure numerical stability. It uses the same rust `std`
library functions we use or have access to (and `f64`).
While the command call syntax in nushell may be a bit more verbose,
having a single source of truth and common commands is beneficial.
Furthermore the `math` commands can themselves implement broadcasting
over lists (or table columns).

Closes #7073

Removed dependencies:
- `meval`
- `nom 1.2.4` (duplicate)

User-Facing Changes:

Scripts using `math eval` will break. 
We remove a further `eval` like behavior to get results through runtime evaluation (albeit limited in scope)

Tests:

- Updated tests that internally used `math eval`.
- Removed one test that primarily used `math eval` to obtain a result from `str join`

crates/nu-command/src/deprecated/math_eval.rs

@@ -0,0 +1,40 @@
+use nu_protocol::ast::Call;
+use nu_protocol::engine::{Command, EngineState, Stack};
+use nu_protocol::{Category, PipelineData, ShellError, Signature, SyntaxShape};
+
+#[derive(Clone)]
+pub struct SubCommand;
+
+impl Command for SubCommand {
+    fn name(&self) -> &str {
+        "math eval"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("math eval")
+            .rest(
+                "ignored",
+                SyntaxShape::Any,
+                "arguments to deprecated command are ignored",
+            )
+            .category(Category::Deprecated)
+    }
+
+    fn usage(&self) -> &str {
+        "Deprecated command"
+    }
+
+    fn run(
+        &self,
+        _engine_state: &EngineState,
+        _stack: &mut Stack,
+        call: &Call,
+        _input: PipelineData,
+    ) -> Result<PipelineData, ShellError> {
+        Err(ShellError::DeprecatedCommand(
+            self.name().to_string(),
+            "math <subcommands>".to_string(),
+            call.head,
+        ))
+    }
+}

crates/nu-command/src/deprecated/mod.rs

@@ -1,5 +1,6 @@
 mod deprecated_commands;
 mod hash_base64;
+mod math_eval;
 mod source;
 mod str_datetime;
 mod str_decimal;
@@ -8,6 +9,7 @@ mod str_int;
 
 pub use deprecated_commands::*;
 pub use hash_base64::HashBase64;
+pub use math_eval::SubCommand as MathEvalDeprecated;
 pub use source::Source;
 pub use str_datetime::StrDatetimeDeprecated;
 pub use str_decimal::StrDecimalDeprecated;