Remove p4-common - handled by cm.dependencies now.

Change-Id: I9b8ba36fb729b7e299257e539763c7ac96780ed6

default.xml

@@ -31,7 +31,6 @@
   <project path="device/moto/wingray" name="CyanogenMod/android_device_moto_wingray" />
   <project path="device/sample" name="device/sample" remote="aosp" revision="refs/tags/android-4.0.4_r1.1" />
   <project path="device/samsung/maguro" name="CyanogenMod/android_device_samsung_maguro" />
-  <project path="device/samsung/p4-common" name="CyanogenMod/android_device_samsung_p4-common" />
   <project path="device/samsung/p5-common" name="CyanogenMod/android_device_samsung_p5-common" />
   <project path="device/samsung/toro" name="CyanogenMod/android_device_samsung_toro" />
   <project path="device/samsung/tuna" name="CyanogenMod/android_device_samsung_tuna" />