power: remove unused variable/mark unused parameter

Change-Id: I9fc0ab96a735b98c0868acb77cb74776c5e5464c
diff --git a/power/power.c b/power/power.c
index a34a5b5..887faf6 100644
--- a/power/power.c
+++ b/power/power.c
@@ -213,8 +213,6 @@
 static void set_power_profile(struct samsung_power_module *samsung_pwr,
                               int profile)
 {
-    int rc;
-
     if (profile < 0 || profile >= PROFILE_MAX) {
         return;
     }
@@ -531,10 +529,8 @@
     return -1;
 }
 
-static void samsung_set_feature(struct power_module *module, feature_t feature, int state __unused)
+static void samsung_set_feature(struct power_module *module __unused, feature_t feature, int state __unused)
 {
-    struct samsung_power_module *samsung_pwr = (struct samsung_power_module *) module;
-
     switch (feature) {
 #ifdef TARGET_TAP_TO_WAKE_NODE
         case POWER_FEATURE_DOUBLE_TAP_TO_WAKE: