Revert "My first commit of codes"

This reverts commit a6e5a69348.

vendor/phpunit/php-code-coverage/tests/_files/BankAccount.php

@@ -1,33 +0,0 @@
-<?php
-class BankAccount
-{
-    protected $balance = 0;
-
-    public function getBalance()
-    {
-        return $this->balance;
-    }
-
-    protected function setBalance($balance)
-    {
-        if ($balance >= 0) {
-            $this->balance = $balance;
-        } else {
-            throw new RuntimeException;
-        }
-    }
-
-    public function depositMoney($balance)
-    {
-        $this->setBalance($this->getBalance() + $balance);
-
-        return $this->getBalance();
-    }
-
-    public function withdrawMoney($balance)
-    {
-        $this->setBalance($this->getBalance() - $balance);
-
-        return $this->getBalance();
-    }
-}