PhoneStatusBar: remove carrier label updates from setAreThereNotifications()

setAreThereNotification doesn't need to process updateCarrierLabelVisibility
this method gets called a RIDICULOUS amount of times as is.

Change-Id: Ia48bce664bcc58c84710d99cf1b27dabf4d331c9
Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java