Disable BWC checks. (opensearch-project#130)

As part of this PR, we are disabling the BWC checks. Once we have finalized the versions for the fork, we can re-enable it with right configurations.

Relates opensearch-project#105

Signed-off-by: Rabi Panda <pandarab@amazon.com>
Signed-off-by: Peter Nied <petern@amazon.com>

build.gradle

@@ -171,12 +171,8 @@ tasks.register("verifyVersions") {
  */
 
 boolean bwc_tests_enabled = false
-String bwc_tests_disabled_issue = "" /* place a PR link here when committing bwc changes */
-if (project.findProperty("bwc_tests_enabled") != null) {
-  bwc_tests_enabled = Boolean.parseBoolean(project.findProperty("bwc_tests_enabled"))
-  bwc_tests_disabled_issue = "Backward compatibility tests disabled via commandline"
-}
-
+/* place a PR link here when committing bwc changes */
+final String bwc_tests_disabled_issue = "https://github.com/opendistro-for-elasticsearch/search/issues/105"
 if (bwc_tests_enabled == false) {
   if (bwc_tests_disabled_issue.isEmpty()) {
     throw new GradleException("bwc_tests_disabled_issue must be set when bwc_tests_enabled == false")