Remove obsolete robolectric test runner integration

The `m Run*RoboTests` test runner is no longer supported, remove the
code to generate the Make rules for it.

Also reduce the number of combining steps by passing the extra jars
that need to be combined into the compile step.

This relands Icf05079bf570bed7a10962cbf03459bd53c51f99 with a fix to
reorder the instrumented app classes after dependency classes.

Test: atest --host SystemUiRoboTests
Flag: EXEMPT refactor
Change-Id: I174ceb95af5557e1859eeb12a2f5fac2332975a8

java/java.go

@@ -553,7 +553,7 @@ type deps struct {
 	// are provided by systemModules.
 	java9Classpath classpath
 
-	processorPath           classpath
+	processorPath           classpath ``
 	errorProneProcessorPath classpath
 	processorClasses        []string
 	staticJars              android.Paths
@@ -980,7 +980,7 @@ func (j *Library) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 			j.dexpreopter.disableDexpreopt()
 		}
 	}
-	j.compile(ctx, nil, nil, nil)
+	j.compile(ctx, nil, nil, nil, nil)
 
 	// If this module is an impl library created from java_sdk_library,
 	// install the files under the java_sdk_library module outdir instead of this module outdir.