This change removes some code from SelectionModifierCursorController
in favor of calling EditorTouchState instead.
Bug: 143852764
Test: Manual and unit tests
atest FrameworksCoreTests:EditorTouchStateTest
atest FrameworksCoreTests:EditorCursorDragTest
atest FrameworksCoreTests:TextViewActivityTest
atest FrameworksCoreTests:SuggestionsPopupWindowTest
Change-Id: I40f0ad8bd4eb0d4af33d0e2cd1a79c99812a9c40