Drop deps from BUCK's genrule

With recent BUCKs, the deps are implicit, and the deps parameter is
gone. With the deps parameter gone, building this plugin broke. Hence,
we invoke genrule without the deps parameter and let BUCK pick up the
dependencies automatically.

Change-Id: Id4a6c43c90c712a4d0541a22e85a2fe8ad77326e

BUCK

diff --git a/BUCK b/BUCK
index 1460890..f0df7a4 100644
--- a/BUCK
+++ b/BUCK
@@ -29,7 +29,6 @@
     name = name_zip,
     cmd = 'cp $SRCS $OUT && zip -qd $OUT ' + ' '.join(excludes),
     srcs = [ src ],
-    deps = [ src ],
     out = name_zip,
     visibility = visibility,
   )