removing unused file

testing/indexer-test-gcp/src/test/java/org/opengroup/osdu/util/IBMHTTPClient.java

-package org.opengroup.osdu.util;
-
-import lombok.ToString;
-import lombok.extern.java.Log;
-
-import java.io.IOException;
-
-@Log
-@ToString
-public class GCPHTTPClient extends HTTPClient {
-
-    private static String token = null;
-
-    @Override
-    public synchronized String getAccessToken() {
-        if(token == null) {
-            try {
-                token = "Bearer " + JwtTokenUtil.getAccessToken();
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        }
-        return token;
-    }
-}
\ No newline at end of file