Revert "When getting a widget provider by name, check all categories"

This reverts commit 1f693513.

Reason for revert: Testing odd behavior between google app and pixel weather and duplicate items issue
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:7e5ed568b9f14570a67293827c5c7248b2ac975d)
Merged-In: If181aa3e86969e8821b7e1cc765c3801f04489d2
Change-Id: If181aa3e86969e8821b7e1cc765c3801f04489d2