power: Remove unused variables

Change-Id: I805a12837bd013e71c098479279dcc5895ea1e1d
diff --git a/power/power.c b/power/power.c
index 6168ea0..5489400 100644
--- a/power/power.c
+++ b/power/power.c
@@ -329,7 +329,6 @@
 static void init_touch_input_power_path(struct samsung_power_module *samsung_pwr)
 {
     char dir[1024];
-    char errno_str[64];
     uint32_t i;
 
     for (i = 0; i < 20; i++) {
@@ -422,7 +421,6 @@
                                   void *data)
 {
     struct samsung_power_module *samsung_pwr = (struct samsung_power_module *) module;
-    char errno_str[64];
     int len;
 
     /* Bail out if low-power mode is active */