[cleanup] Remove deprecated Neuter API calls

These were deprecated in 7.8 via:
https://chromium-review.googlesource.com/c/v8/v8/+/1735316

Use Detach() instead.

Bug: chromium:913887, v8:9396
Change-Id: I7d0b0c0273188c99f5afee18d4880852f5e59d10
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1801850
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63748}

include/v8.h

@@ -4858,12 +4858,6 @@ class V8_EXPORT ArrayBuffer : public Object {
    */
   bool IsDetachable() const;
 
-  // TODO(913887): fix the use of 'neuter' in the API.
-  V8_DEPRECATED("Use IsDetachable() instead.",
-                inline bool IsNeuterable() const) {
-    return IsDetachable();
-  }
-
   /**
    * Detaches this ArrayBuffer and all its views (typed arrays).
    * Detaching sets the byte length of the buffer and all typed arrays to zero,
@@ -4872,9 +4866,6 @@ class V8_EXPORT ArrayBuffer : public Object {
    */
   void Detach();
 
-  // TODO(913887): fix the use of 'neuter' in the API.
-  V8_DEPRECATED("Use Detach() instead.", inline void Neuter()) { Detach(); }
-
   /**
    * Make this ArrayBuffer external. The pointer to underlying memory block
    * and byte length are returned as |Contents| structure. After ArrayBuffer