remove deprecated inheritEnvironmentVariables() method

src/Symfony/Component/Process/CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 5.0.0
 -----
 
+ * removed `Process::inheritEnvironmentVariables()`
  * removed `PhpProcess::setPhpBinary()`
  * `Process` must be instantiated with a command array, use `Process::fromShellCommandline()` when the command should be parsed by the shell
  * removed `Process::setCommandLine()`

src/Symfony/Component/Process/Process.php

@@ -1176,24 +1176,6 @@ class Process implements \IteratorAggregate
         return $this;
     }
 
-    /**
-     * Sets whether environment variables will be inherited or not.
-     *
-     * @return self The current Process instance
-     *
-     * @deprecated since Symfony 4.4, env variables are always inherited
-     */
-    public function inheritEnvironmentVariables(bool $inheritEnv = true)
-    {
-        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.4, env variables are always inherited.', __METHOD__), E_USER_DEPRECATED);
-
-        if (!$inheritEnv) {
-            throw new InvalidArgumentException('Not inheriting environment variables is not supported.');
-        }
-
-        return $this;
-    }
-
     /**
      * Performs a check between the timeout definition and the time the process started.
      *