Comment out 'new_MethodHandle2' (currently unused)

Author: 1st1

uvloop/cbhandles.pyx

@@ -240,7 +240,8 @@ cdef new_MethodHandle1(Loop loop, str name, method1_t *callback,
 
     return handle
 
-
+# The below code is currently unused.
+'''
 cdef new_MethodHandle2(Loop loop, str name, method2_t *callback, object ctx,
                        object arg1, object arg2):
 
@@ -257,7 +258,7 @@ cdef new_MethodHandle2(Loop loop, str name, method2_t *callback, object ctx,
     handle.arg3 = arg2
 
     return handle
-
+'''
 
 cdef new_MethodHandle3(Loop loop, str name, method3_t *callback, object ctx,
                        object arg1, object arg2, object arg3):