remove clearsilver fork/repo, no more required in ICS

Was required before for 3 regex source files (not clearsilver)

The libclearsilverregex is still provided by busybox for bash repo

default.xml

@@ -53,7 +53,6 @@
   <project path="external/bzip2" name="CyanogenMod/android_external_bzip2" />
   <project path="external/chromium" name="CyanogenMod/android_external_chromium" />
   <project path="external/clang" name="platform/external/clang" remote="aosp" revision="refs/tags/android-4.0.3_r1" />
-  <project path="external/clearsilver" name="CyanogenMod/android_external_clearsilver" />
   <project path="external/collada" name="platform/external/collada" remote="aosp" revision="refs/tags/android-4.0.3_r1" />
   <project path="external/dbus" name="CyanogenMod/android_external_dbus" />
   <project path="external/dhcpcd" name="CyanogenMod/android_external_dhcpcd" />