revert: move to ahash (#9464)

This PR reverts https://github.com/nushell/nushell/pull/9391

We try not to revert PRs like this, though after discussion with the
Nushell team, we decided to revert this one.

The main reason is that Nushell, as a codebase, isn't ready for these
kinds of optimisations. It's in the part of the development cycle where
our main focus should be on improving the algorithms inside of Nushell
itself. Once we have matured our algorithms, then we can look for
opportunities to switch out technologies we're using for alternate
forms.

Much of Nushell still has lots of opportunities for tuning the codebase,
paying down technical debt, and making the codebase generally cleaner
and more robust. This should be the focus. Performance improvements
should flow out of that work.

Said another, optimisation that isn't part of tuning the codebase is
premature at this stage. We need to focus on doing the hard work of
making the engine, parser, etc better.

# User-Facing Changes

Reverts the HashMap -> ahash change.

cc @FilipAndersson245

crates/nu-protocol/src/ast/call.rs

@@ -1,4 +1,4 @@
-use ahash::{HashMap, HashMapExt};
+use std::collections::HashMap;
 
 use serde::{Deserialize, Serialize};
 

crates/nu-protocol/src/ast/import_pattern.rs

@@ -1,7 +1,7 @@
 use serde::{Deserialize, Serialize};
 
 use crate::{span, ModuleId, Span};
-use ahash::{HashSet, HashSetExt};
+use std::collections::HashSet;
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum ImportPatternMember {

crates/nu-protocol/src/config.rs

@@ -1,6 +1,6 @@
 use crate::{ShellError, Span, Value};
-use ahash::{HashMap, HashMapExt};
 use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
 
 const TRIM_STRATEGY_DEFAULT: TrimStrategy = TrimStrategy::Wrap {
     try_to_keep_words: true,

crates/nu-protocol/src/engine/capture_block.rs

@@ -1,4 +1,4 @@
-use ahash::HashMap;
+use std::collections::HashMap;
 
 use crate::{BlockId, Value, VarId};
 

crates/nu-protocol/src/engine/engine_state.rs

@@ -7,9 +7,9 @@ use crate::{
     Signature, Span, Type, VarId, Variable, VirtualPathId,
 };
 use crate::{ParseError, Value};
-use ahash::{HashMap, HashMapExt, HashSet, HashSetExt};
 use core::panic;
 use std::borrow::Borrow;
+use std::collections::{HashMap, HashSet};
 use std::num::NonZeroUsize;
 use std::path::Path;
 use std::path::PathBuf;

crates/nu-protocol/src/engine/overlay.rs

@@ -1,6 +1,6 @@
 use crate::{DeclId, ModuleId, OverlayId, Type, Value, VarId};
-use ahash::{HashMap, HashMapExt};
 use std::borrow::Borrow;
+use std::collections::HashMap;
 use std::hash::{Hash, Hasher};
 
 pub static DEFAULT_OVERLAY_NAME: &str = "zero";

crates/nu-protocol/src/engine/stack.rs

@@ -1,4 +1,4 @@
-use ahash::{HashMap, HashMapExt, HashSet, HashSetExt};
+use std::collections::{HashMap, HashSet};
 
 use crate::engine::EngineState;
 use crate::engine::DEFAULT_OVERLAY_NAME;

crates/nu-protocol/src/value/from_value.rs

@@ -1,4 +1,4 @@
-use ahash::{HashMap, HashMapExt};
+use std::collections::HashMap;
 use std::path::PathBuf;
 use std::str::FromStr;
 

crates/nu-protocol/src/value/mod.rs

@@ -11,7 +11,6 @@ use crate::ast::{Math, Operator};
 use crate::engine::EngineState;
 use crate::ShellError;
 use crate::{did_you_mean, BlockId, Config, Span, Spanned, Type, VarId};
-use ahash::HashMap;
 use byte_unit::ByteUnit;
 use chrono::{DateTime, Duration, FixedOffset};
 use chrono_humanize::HumanTime;
@@ -24,6 +23,7 @@ use nu_utils::get_system_locale;
 use num_format::ToFormattedString;
 pub use range::*;
 use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
 use std::{
     borrow::Cow,
     fmt::{Display, Formatter, Result as FmtResult},