Revert "Merge commit '50738779' into gingerbread-plus-aosp" - do not merge

This reverts commit 7e1ce27c08ec57032520613488ec2fe5b3795126, reversing
changes made to 7dfc1270967c96be6dcd58fb7770c07482a7e90d.

Change-Id: I2b4c33ad56a12612f2fc05845428409d7023f683
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index d4a429d..2f57cf7 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -41,7 +41,7 @@
   # which is the version that we reveal to the end user.
   # Update this value when the platform version changes (rather
   # than overriding it somewhere else).  Can be an arbitrary string.
-  PLATFORM_VERSION := 2.3.3
+  PLATFORM_VERSION := AOSP
 endif
 
 ifeq "" "$(PLATFORM_SDK_VERSION)"