[utils] Remove unused MutableCStrVector

R=jkummerow@chromium.org

Bug: v8:9810
Change-Id: I1ce34f5c34c0a858cb725d56ef47d9dbd697a1e3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1934336
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65182}

src/utils/vector.h

@@ -242,14 +242,6 @@ inline Vector<const uint8_t> OneByteVector(const char* data) {
   return OneByteVector(data, strlen(data));
 }
 
-inline Vector<char> MutableCStrVector(char* data) {
-  return Vector<char>(data, strlen(data));
-}
-
-inline Vector<char> MutableCStrVector(char* data, size_t max) {
-  return Vector<char>(data, strnlen(data, max));
-}
-
 // For string literals, ArrayVector("foo") returns a vector ['f', 'o', 'o', \0]
 // with length 4 and null-termination.
 // If you want ['f', 'o', 'o'], use CStrVector("foo").