[cleanup] Remove left-over comment

The respective code was removed in May 2015:
c5eb9573

R=jochen@chromium.org
BUG=v8:6474
NOTRY=true

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I21be194e16b0a10613d62bc38fa10faee082da41
Reviewed-on: https://chromium-review.googlesource.com/530685Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45837}

include/v8.h

@@ -1031,9 +1031,6 @@ class ScriptOrigin {
   V8_INLINE Local<Value> ResourceName() const;
   V8_INLINE Local<Integer> ResourceLineOffset() const;
   V8_INLINE Local<Integer> ResourceColumnOffset() const;
-  /**
-    * Returns true for embedder's debugger scripts
-    */
   V8_INLINE Local<Integer> ScriptID() const;
   V8_INLINE Local<Value> SourceMapUrl() const;
   V8_INLINE ScriptOriginOptions Options() const { return options_; }