clk: Remove unused inline function clk_debug_reparent

There's no callers in-tree anymore.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lkml.kernel.org/r/20200505083001.52564-1-yuehaibing@huawei.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk.c

@@ -3295,10 +3295,6 @@ static int __init clk_debug_init(void)
 late_initcall(clk_debug_init);
 #else
 static inline void clk_debug_register(struct clk_core *core) { }
-static inline void clk_debug_reparent(struct clk_core *core,
-				      struct clk_core *new_parent)
-{
-}
 static inline void clk_debug_unregister(struct clk_core *core)
 {
 }