removed keycloak support from custom oauth2 user service

Author: anirbandas18

src/main/java/com/digitalsanctuary/spring/user/service/DSOAuth2UserService.java

@@ -57,7 +57,6 @@ public User handleOAuthLoginSuccess(String registrationId, OAuth2User oAuth2User
             user = getUserFromGoogleOAuth2User(oAuth2User);
         } else if (registrationId.equalsIgnoreCase("facebook")) {
             user = getUserFromFacebookOAuth2User(oAuth2User);
-        } else if (registrationId.equalsIgnoreCase("keycloak")) {
         } else {
             log.error("Sorry! Login with " + registrationId + " is not supported yet.");
             throw new OAuth2AuthenticationException(new OAuth2Error("Login Exception"),