cpuidle/powernv : Remove dead code block

Commit 1961acad removes usage of
function "validate_dt_prop_sizes". This patch removes this unused
function.
Signed-off-by: Abhishek Goel <huntbag@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200706053258.121475-1-huntbag@linux.vnet.ibm.com

drivers/cpuidle/cpuidle-powernv.c

@@ -244,20 +244,6 @@ static inline void add_powernv_state(int index, const char *name,
 	stop_psscr_table[index].mask = psscr_mask;
 }
 
-/*
- * Returns 0 if prop1_len == prop2_len. Else returns -1
- */
-static inline int validate_dt_prop_sizes(const char *prop1, int prop1_len,
-					 const char *prop2, int prop2_len)
-{
-	if (prop1_len == prop2_len)
-		return 0;
-
-	pr_warn("cpuidle-powernv: array sizes don't match for %s and %s\n",
-		prop1, prop2);
-	return -1;
-}
-
 extern u32 pnv_get_supported_cpuidle_states(void);
 static int powernv_add_idle_states(void)
 {