deps: silence V8's warnnig on CompileFunction

We are not ready to migrate yet.

Refs: nodejs/node-v8#214

Author: targos

deps/v8/include/v8-script.h

@@ -688,7 +688,6 @@ class V8_EXPORT ScriptCompiler {
    * It is possible to specify multiple context extensions (obj in the above
    * example).
    */
-  V8_DEPRECATE_SOON("Use CompileFunction")
   static V8_WARN_UNUSED_RESULT MaybeLocal<Function> CompileFunctionInContext(
       Local<Context> context, Source* source, size_t arguments_count,
       Local<String> arguments[], size_t context_extension_count,