Revert "Add VISIT_RISKY_URIS flag."

This reverts commit d12e70a12a8f73f98e683f01cd06abd329b0f445.

Reason for revert: this was replaced by an aconfig flag

Fix: 301242692

Change-Id: Ia704a00b922fcd21cd4edaec4b1da48957109ddf
1 file changed