Migrate Cellbroadcast modules to use modules-utils

StateMachine stand-alone library will replace all specific filegroup
created for module.
It will be then moved into modules-utils
Preconditions and handlerExecutor are arlready moved in modules-utils

Bug: 198418216
Tag: #refactor
Test: Build
Change-Id: Ia72c92d6be150edfee3743878d988f21a585e808

core/java/Android.bp

@@ -371,12 +371,7 @@ filegroup {
 filegroup {
     name: "framework-cellbroadcast-shared-srcs",
     srcs: [
-        ":modules-utils-preconditions-srcs",
-        "android/os/HandlerExecutor.java",
         "android/util/LocalLog.java",
-        "com/android/internal/util/IState.java",
-        "com/android/internal/util/State.java",
-        "com/android/internal/util/StateMachine.java",
     ],
 }