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

This reverts commit 1f69351310.

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

src/com/android/launcher3/util/PackageUserKey.java

@@ -48,10 +48,6 @@ public class PackageUserKey {
         update(/* packageName= */ "", widgetCategory, user);
     }
 
-    public PackageUserKey(String packageName, int widgetCategory, UserHandle user) {
-        update(packageName, widgetCategory, user);
-    }
-
     public void update(String packageName, UserHandle user) {
         update(packageName, NO_CATEGORY, user);
     }