cm: etc: Remove unused superuser.rc import

We are now using the LOCAL_INIT_RC macro for the su daemon.

Change-Id: I333e31179503e4625ec166adeebdce05731f6d8f
diff --git a/prebuilt/common/etc/init.local.rc b/prebuilt/common/etc/init.local.rc
index 2a5316d..3636731 100644
--- a/prebuilt/common/etc/init.local.rc
+++ b/prebuilt/common/etc/init.local.rc
@@ -1,6 +1,4 @@
 # CyanogenMod Extras
-import /init.superuser.rc
-
 on init
     export ANDROID_CACHE /cache
     export TERMINFO /system/etc/terminfo