Remove unused libprocessgroup dependency

libjsoncpp is a dependency of libprocessgroup

Test: mmma system/libhidl/fuzzer/
Change-Id: I2d93801b305d3795d343d7e18c2b55e3acedb398
diff --git a/fuzzer/Android.bp b/fuzzer/Android.bp
index c353960..09d41bf 100644
--- a/fuzzer/Android.bp
+++ b/fuzzer/Android.bp
@@ -27,8 +27,6 @@
         "liblog",
         "libcutils",
         "libutils",
-        "libprocessgroup",
-        "libjsoncpp",
         "libfmq",
     ],
     target: {