Remove the deprecated cursor methods.

Change-Id: Ie3571fea9f36996c31c327240b11086f8cc487f0

Conflicts:
	core/java/android/database/sqlite/SQLiteCursor.java
	core/tests/coretests/src/android/database/DatabaseCursorTest.java
	core/tests/coretests/src/android/database/DatabaseGeneralTest.java