clk: cdce925: Remove redundant assignment to variable 'rate'

The variable 'rate' being assigned a value that is never read, the
assignment is redundant and can be removed.

Cleans up clang scan build warning:
drivers/clk/clk-cdce925.c:104:3: warning: Value stored to 'rate' is
never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-cdce925.c

···
 
 	if (rate <= parent_rate) {
 		/* Can always deliver parent_rate in bypass mode */
-		rate = parent_rate;
 		*n = 0;
 		*m = 0;
 	} else {