Revert "[Magnifier-77] Show it on long press selection"

This reverts commit 88fbed49afaa657cca68b931c1d1aa03d33f1af3.

Reason for revert: We decided to punt this functionality to R, in order to keep consistency with WebView and Chrome. (b/119819194)

Change-Id: I625a8bca52687e3f15957f4dc4a0982c1ad28a2a
1 file changed