Remove CtsNetTestCasesLatestSdk

CtsNetTestCasesLatestSdk was originally used for MTS but aosp/2963602
added CtsNetTestCases to MTS.
And CtsNetTestCasesLatestSdk can be removed now.
This CL Removes CtsNetTestCasesLatestSdk and updated TEST_MAPPING to use
CtsNetTestCases.

Test: TH
Change-Id: I5bb766c12b67cb9016351a24493ec9dbf695fcf9
diff --git a/tests/cts/net/AndroidTestTemplate.xml b/tests/cts/net/AndroidTestTemplate.xml
index 38f26d8..c072c5b 100644
--- a/tests/cts/net/AndroidTestTemplate.xml
+++ b/tests/cts/net/AndroidTestTemplate.xml
@@ -42,8 +42,8 @@
              those tests with an annotation matching the name of the APK.
 
              This allows us to maintain one AndroidTestTemplate.xml for all CtsNetTestCases*.apk,
-             and have CtsNetTestCases and CtsNetTestCasesLatestSdk run all tests, but have
-             CtsNetTestCasesMaxTargetSdk31 run only tests that require target SDK 31.
+             and have CtsNetTestCases run all tests, but have CtsNetTestCasesMaxTargetSdk31 run only
+             tests that require target SDK 31.
 
              This relies on the fact that if the class specified in include-annotation exists, then
              the runner will only run the tests annotated with that annotation, but if it does not,