Remove NOTICE symlink.

The .bp file explicitly points to upstream's COPYING file.

Test: treehugger
Change-Id: I1f2f7788e4cf832983e346d362db76f3f03fe979
diff --git a/NOTICE b/NOTICE
deleted file mode 120000
index cf3af40..0000000
--- a/NOTICE
+++ /dev/null
@@ -1 +0,0 @@
-COPYRIGHT
\ No newline at end of file