Revert "Added build date (ro.build.date from build.prop) to device info."

This reverts commit b50c490f8e3f2bc713c4adb35e4ecbf9d6b146f7.
Revert "Add Modver to Settings."

This reverts commit 7c63ed0f9421204d638a723bfbb81d0405a8f6b0.