gn2bp: remove another perfetto-specific hack

Test: //base:base
Change-Id: Id8932aaaa69bcd860b54247023e6cd9718a36e08
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index 66ba104..5db0816 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -838,11 +838,6 @@
     if not module_is_compiled:
       continue
 
-
-    # Don't recurse in any other //gn dep if not handled by builtin_deps.
-    if dep_name.startswith('//gn:'):
-      continue
-
     if dep_module is None:
       continue
     if dep_module.type == 'cc_library_shared':