Deactivate build for oprofile.

BUG: 13249790
Change-Id: I24d56e195a7aa33c44228af38a758d6156fa1415
diff --git a/Android.mk b/Android.mk
index 0a05aed..186b0c0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -12,4 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-include $(call all-subdir-makefiles)
+# It is non-trivial to retire a project completely from the repository,
+# so we disable the build explicitly here.
+# b/13249790
+#include $(call all-subdir-makefiles)