ROmControl: Remove android:label from TransparencyDialog

Transparency dialog had same label as the actual General
User Interface, which was causing a duplicate(non-working)
General UI in Uri lists generated for NavBar and NavRing
custom apps when selecting ROMControl

Change-Id: I8f4dc81acff9c071b72880d1d1a5afbcde886e2e
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>