chore: remove useless code

Author: aojunhao123

src/InputNumber.tsx

@@ -663,20 +663,6 @@ const InputNumber = React.forwardRef<InputNumberRef, InputNumberProps>((props, r
   React.useImperativeHandle(ref, () =>
     proxyObject(inputFocusRef.current, {
       focus,
-      blur: () => {
-        inputFocusRef.current?.blur();
-      },
-      setSelectionRange: (
-        start: number,
-        end: number,
-        direction?: 'forward' | 'backward' | 'none',
-      ) => {
-        inputFocusRef.current?.setSelectionRange(start, end, direction);
-      },
-      select: () => {
-        inputFocusRef.current?.select();
-      },
-      input: inputFocusRef.current,
       nativeElement: holderRef.current.nativeElement || inputNumberDomRef.current,
     }),
   );