removed keycloak support from custom oauth2 user service

Author: anirbandas18

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

@@ -58,7 +58,6 @@ public User handleOAuthLoginSuccess(String registrationId, OAuth2User oAuth2User
         } else if (registrationId.equalsIgnoreCase("facebook")) {
             user = getUserFromFacebookOAuth2User(oAuth2User);
         } else if (registrationId.equalsIgnoreCase("keycloak")) {
-            user = getUserFromKeycloakOAuth2User(oAuth2User);
         } else {
             log.error("Sorry! Login with " + registrationId + " is not supported yet.");
             throw new OAuth2AuthenticationException(new OAuth2Error("Login Exception"),
@@ -143,27 +142,6 @@ public User getUserFromGoogleOAuth2User(OAuth2User principal) {
         return user;
     }
 
-    /**
-     *
-     * Retrieves user information from a Keycloak OAuth2User object.
-     *
-     * @param principal The OAuth2User object containing information about the authenticated user.
-     * @return A User object representing the authenticated user.
-     */
-    public User getUserFromKeycloakOAuth2User(OAuth2User principal) {
-        log.debug("Getting user info from Keycloak OAuth2 provider with principal: {}", principal);
-        if (principal == null) {
-            return null;
-        }
-        log.debug("Principal attributes: {}", principal.getAttributes());
-        User user = new User();
-        user.setEmail(principal.getAttribute("email"));
-        user.setFirstName(principal.getAttribute("given_name"));
-        user.setLastName(principal.getAttribute("family_name"));
-        user.setProvider(User.Provider.KEYCLOAK);
-        return user;
-    }
-
     /**
      * Retrieves user information from a Facebook OAuth2User object.
      *