Revert "🔀 Merge branch 'oauth-support' of https://github.com/tildabio/n8n"

This reverts commit 0c5972bb98, reversing
changes made to 3de03b5097.

packages/editor-ui/src/components/mixins/restApi.ts

@@ -252,21 +252,6 @@ export const restApi = Vue.extend({
 					return self.restApi().makeRestApiRequest('GET', `/credential-types`);
 				},
 
-				// Get OAuth2 Authorization URL using the stored credentials
-				OAuth2CredentialAuthorize: (sendData: ICredentialsResponse): Promise<string> => {
-					return self.restApi().makeRestApiRequest('GET', `/oauth2-credential/auth`, sendData);
-				},
-
-				// Verify OAuth2 provider callback and kick off token generation
-				OAuth2Callback: (code: string, state: string): Promise<string> => {
-					const sendData = {
-						'code': code,
-						'state': state,
-					};
-
-					return self.restApi().makeRestApiRequest('POST', `/oauth2-credential/callback`, sendData);
-				},
-
 				// Returns the execution with the given name
 				getExecution: async (id: string): Promise<IExecutionResponse> => {
 					const response = await self.restApi().makeRestApiRequest('GET', `/executions/${id}`);