Remov a todo that is no longer needed

There is not much point in building internal tests against the SDK and
limiting its API usage.

See b/136044235 #4 ~ #6 for detailed discussion.

Bug: 136044235
Test: mm
no build breaks should happen

Change-Id: I02437d7e4436cfc9b1fce9b04b0edb50bf70dc28

tests/RollbackTest/Android.bp

@@ -19,7 +19,6 @@ android_test {
     static_libs: ["androidx.test.rules", "cts-rollback-lib", "cts-install-lib"],
     test_suites: ["general-tests"],
     test_config: "RollbackTest.xml",
-    // TODO: sdk_version: "test_current" when Intent#resolveSystemservice is TestApi
 }
 
 java_test_host {