Remove debugging accidentally added to visibility error message

If125ea981be87673bae3bd0a7e3b2c16c337e8f7 accidentally added the
dependency tag to the visibility error message.

Test: builds
Change-Id: I8c9ce89aad2bb4a475c4d8bf9d4a6daa9ea6e3a2
diff --git a/android/visibility.go b/android/visibility.go
index 416a3f1..9153687 100644
--- a/android/visibility.go
+++ b/android/visibility.go
@@ -551,7 +551,7 @@
 
 		rule := effectiveVisibilityRules(ctx.Config(), depQualified)
 		if !rule.matches(qualified) {
-			ctx.ModuleErrorf("depends on %s which is not visible to this module\nYou may need to add %q to its visibility, %#v", depQualified, "//"+ctx.ModuleDir(), ctx.OtherModuleDependencyTag(dep))
+			ctx.ModuleErrorf("depends on %s which is not visible to this module\nYou may need to add %q to its visibility", depQualified, "//"+ctx.ModuleDir())
 		}
 	})
 }