Remove annotation_processors property

Now that there are no uses left of annotation_processors remove
the property.

If there are no annotation processor classes for javac for a module,
due to an empty "plugins" property or using kapt for annotation
processors, pass -proc:none to javac to ensure it does not try
to run any annotation processors found in the classpath.

Bug: 77284273
Test: plugin_test.go, kotlin_test.go
Change-Id: I3823d9fec8d3d07d2e49b1d97839f7fcbdd35647

java/builder.go

@@ -255,8 +255,7 @@ func transformJavaToClasses(ctx android.ModuleContext, outputFile android.Writab
 	deps = append(deps, flags.classpath...)
 	deps = append(deps, flags.processorPath...)
 
-	// TODO(b/77284273): pass -processor:none if no plugins are listed
-	processor := ""
+	processor := "-proc:none"
 	if flags.processor != "" {
 		processor = "-processor " + flags.processor
 	}