Add TEST_MAPPING

...and remove the broken test!

Bug: 137191822
Test: treehugger (hopefully!?)
Change-Id: I175c1262275ae95caabac32a5308fd454ae62a4d
diff --git a/apex/sdkext/TEST_MAPPING b/apex/sdkext/TEST_MAPPING
new file mode 100644
index 0000000..8dc732d
--- /dev/null
+++ b/apex/sdkext/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+      "name": "framework-sdkext-tests"
+    }
+  ]
+}