chore: remove undocumented validatorExit method

web3.js/module.d.ts

@@ -527,7 +527,6 @@ declare module '@solana/web3.js' {
     removeSignatureListener(id: number): Promise<void>;
     onRootChange(callback: RootChangeCallback): number;
     removeRootChangeListener(id: number): Promise<void>;
-    validatorExit(): Promise<boolean>;
     getMinimumBalanceForRentExemption(
       dataLength: number,
       commitment?: Commitment,

web3.js/module.flow.js

@@ -531,7 +531,6 @@ declare module '@solana/web3.js' {
     removeSignatureListener(id: number): Promise<void>;
     onRootChange(callback: RootChangeCallback): number;
     removeRootChangeListener(id: number): Promise<void>;
-    validatorExit(): Promise<boolean>;
     getMinimumBalanceForRentExemption(
       dataLength: number,
       commitment: ?Commitment,

web3.js/src/connection.js

@@ -2682,18 +2682,6 @@ export class Connection {
     return await this.sendRawTransaction(wireTransaction, options);
   }
 
-  /**
-   * @private
-   */
-  async validatorExit(): Promise<boolean> {
-    const unsafeRes = await this._rpcRequest('validatorExit', []);
-    const res = create(unsafeRes, jsonRpcResult(boolean()));
-    if (res.error) {
-      throw new Error('validator exit failed: ' + res.error.message);
-    }
-    return res.result;
-  }
-
   /**
    * Send a transaction that has already been signed and serialized into the
    * wire format

web3.js/test/connection.test.js

@@ -258,19 +258,6 @@ describe('Connection', () => {
     }
   });
 
-  if (!process.env.TEST_LIVE) {
-    it('validatorExit', async () => {
-      await mockRpcResponse({
-        method: 'validatorExit',
-        params: [],
-        value: false,
-      });
-
-      const result = await connection.validatorExit();
-      expect(result).to.eq(false);
-    });
-  }
-
   it('get balance', async () => {
     const account = new Account();