Revert 242834 "Add tests to make sure ChromeELF.dll imports are ..."

It fails on Win 7 Tests x64 (2) bot.

> Add tests to make sure ChromeELF.dll imports are correct:
> 
> 1. Make sure chrome_elf.dll imports nothing besides kernel32 and some
> msvc libs (DEBUG builds)
> 2. make sure chrome_elf.dll is always the first entry in chrome.exe's
> import table.
> 
> Review URL: https://codereview.chromium.org/109483003

TBR=caitkp@chromium.org

Review URL: https://codereview.chromium.org/123583004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242852 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242852