Remove modules-utils-build_system from filegroup

Remove modules-utils-build_system from static lib of service-wifi.jar,
because it is already in static lib of framework-wifi.jar
Cherry-picked from https://android-review.googlesource.com/1792931

Bug: 195965491
Test: build apex
Merged-In: Ica496e67dd8b7c83aa93a512d06ad1a05d1c9c8d
Change-Id: Ib2fc438eb01787a0910c29601b579c17d06130de

services/net/Android.bp

@@ -52,7 +52,6 @@ java_library {
         // classes generated by netd_aidl_interfaces-platform-java above.
         "netd_aidl_interface-V3-java",
         "networkstack-client",
-        "modules-utils-build_system",
     ],
     apex_available: [
         "com.android.wifi",