[csa][cleanup] Remove ParameterMode versions of parameter casting

Removed all uses of ParameterToTagged and TaggedToParameter but
forgot to remove the method themselves.

Bug: v8:9708, v8:6949
Change-Id: I8718a0739ce81ca42546125fac765618e0208cb2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2356388Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69436}

src/codegen/code-stub-assembler.h

@@ -348,20 +348,9 @@ class V8_EXPORT_PRIVATE CodeStubAssembler
 
   TNode<Smi> ParameterToTagged(TNode<IntPtrT> value) { return SmiTag(value); }
 
-  TNode<Smi> ParameterToTagged(Node* value, ParameterMode mode) {
-    if (mode != SMI_PARAMETERS) return SmiTag(value);
-    return UncheckedCast<Smi>(value);
-  }
-
   template <typename TIndex>
   TNode<TIndex> TaggedToParameter(TNode<Smi> value);
 
-  // TODO(v8:9708): remove once all uses are ported.
-  Node* TaggedToParameter(TNode<Smi> value, ParameterMode mode) {
-    if (mode != SMI_PARAMETERS) return SmiUntag(value);
-    return value;
-  }
-
   bool ToParameterConstant(Node* node, intptr_t* out, ParameterMode mode) {
     if (mode == ParameterMode::SMI_PARAMETERS) {
       Smi constant;