Workaround Android's lack of java.beans.PropertyEditor/Manager

The classes are used to allow developers to customize
JUnitParams' handling of conversion from literal String values
to the type of parameters required by the parameterized test
methods.

This simply removes the code that uses the classes. That means
developers who require custom data types will have to accept
String parameters in their parameterized test methods and do the
conversions manually.

Bug: 30244565
Change-Id: I0dd479591d6fb60f0a08025c51ab3c9494c1bda2
Test: Once it compiles the tests will be run.
diff --git a/README.google b/README.google
index 5a15234..ac1b328 100644
--- a/README.google
+++ b/README.google
@@ -9,3 +9,7 @@
       30244565 - Work around the Android API's lack of the class
                  javax.lang.model.type.NullType by replacing
                  with Void.
+      30244565 - Work around Android's lack of the
+                 java.beans.PropertyEditor and
+                 java.beans.PropertyEditorManager classes by
+                 removing the usages of them.