Delete deprecated methods from v8-profiler.h

All these methods were already marked as V8_DEPRECATED in V8 Version 3.18.0 (see https://code.google.com/p/v8/source/browse/trunk/include/v8-profiler.h?r=14304) so it is time to delete them.

BUG=None
R=loislo@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/17524007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00