ART: Fix type parameter in tests

Move Class to Class<?>, Constructor to Constructor<?>, and in
general clean up reflection.

Test: m test-art-host-run-test
Change-Id: I3a4223ee8d14d032015edf34bf27135757f7138c
diff --git a/test/044-proxy/src/FloatSelect.java b/test/044-proxy/src/FloatSelect.java
index febe697..217ccaf 100644
--- a/test/044-proxy/src/FloatSelect.java
+++ b/test/044-proxy/src/FloatSelect.java
@@ -34,7 +34,7 @@
     public static void main(String[] args) {
         FloatSelectI proxyObject = (FloatSelectI) Proxy.newProxyInstance(
             FloatSelectI.class.getClassLoader(),
-            new Class[] { FloatSelectI.class },
+            new Class<?>[] { FloatSelectI.class },
             new FloatSelectIInvoke1());
 
         float floatResult = proxyObject.method(2.1f, 5.8f);