Power: Remove unused variables

For build-system CFLAGS clean-up, remove unused variables.

Bug: 18632512
Change-Id: I25d818a9a6fad1ddb5cd71e4373f625d6ff0c567
diff --git a/power/power.c b/power/power.c
index 81d640a..4e9dda7 100644
--- a/power/power.c
+++ b/power/power.c
@@ -114,8 +114,6 @@
 
 static void fugu_power_set_interactive(struct power_module *module, int on)
 {
-    struct dirent **device_list = NULL;
-
     ALOGI("setInteractive: on=%d", on);
     (void) module; /* unused */
     (void) on; /* unused */
@@ -140,7 +138,6 @@
 static void fugu_power_hint(struct power_module *module, power_hint_t hint, void *data)
 {
     struct intel_power_module *mod = (struct intel_power_module *) module;
-    char sysfs_val[80];
     struct timespec curr_time;
     struct timespec diff_time;
     uint64_t diff;