Delete goog.isFunction. RELNOTES[INC]: goog.isFunction has been deleted. Use goog.functions.isFunction or `typeof x === 'function'` instead.
Delete goog.isFunction.
RELNOTES[INC]: goog.isFunction has been deleted. Use goog.functions.isFunction or `typeof x === 'function'` instead.

PiperOrigin-RevId: 332275284

google/closure-library,google/closure-library,google/closure-library,google/closure-library,google/closure-library