[Clean up] Delete InstantUnitTestBase::SetUpWithoutCacheableNTP().

Follow up of crrev.com/141893009.

BUG=none
TEST=none

Review URL: https://codereview.chromium.org/164023002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251152 0039d316-1c4b-4281-b951-d872f2087c98
[Android] Lint pylib/instrumentation.

BUG=168518
NOTRY=true

Review URL: https://codereview.chromium.org/163923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251153 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251152
SVN changes up to revision 251153