Revert "Accurate function prototypes for native calls from ARM simulator."

This reverts commit https://code.google.com/p/v8/source/detail?r=14230

The reason for revert is Win64 mksnapshot failure.

Conflicts:
	src/arm/simulator-arm.cc

BUG=

Review URL: https://codereview.chromium.org/14096025

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14307 ce2b1a6d-e550-0410-aec6-3dcde31c8c00