Remove mindplay/composer-locator package.

Removing the package again, as it unfortunately only works _after_ the autoloader has been dumped, which makes it useless in our case (where we want to use it to control autoloader generation).

Falling back to just assuming that `wp-cli/wp-cli` is installed in the `vendor/wp-cli/wp-cli` folder, as the root package can still override this value.

composer.json

@@ -24,7 +24,6 @@
 		"class": "WP_CLI\\AutoloadSplitter\\ComposerPlugin"
 	},
 	"require": {
-		"composer-plugin-api": "^1.1",
-		"mindplay/composer-locator": "^2.1"
+		"composer-plugin-api": "^1.1"
 	}
 }

src/ComposerPlugin.php

@@ -8,7 +8,6 @@
 use Composer\Plugin\PluginInterface;
 use Composer\Script\Event;
 use Composer\Script\ScriptEvents;
-use ComposerLocator;
 
 /**
  * Class ComposerPlugin.
@@ -66,12 +65,8 @@ public static function dump(Event $event)
             ->getPackage()
             ->getExtra();
 
-        $autoloadSplitterLocationFallback = ComposerLocator::isInstalled('wp-cli/wp-cli')
-            ? ComposerLocator::getPath('wp-cli/wp-cli') . '/php/WP_CLI/AutoloadSplitter.php'
-	        : 'vendor/wp-cli/wp-li/php/WP_CLI/AutoloadSplitter.php';
-
         $splitterLogic    = self::getExtraKey(self::LOGIC_CLASS_KEY, 'WP_CLI\AutoloadSplitter');
-        $splitterLocation = self::getExtraKey(self::LOGIC_CLASS_LOCATION_KEY, $autoloadSplitterLocationFallback);
+        $splitterLocation = self::getExtraKey(self::LOGIC_CLASS_LOCATION_KEY, 'vendor/wp-cli/wp-li/php/WP_CLI/AutoloadSplitter.php');
         $filePrefixTrue   = self::getExtraKey(self::SPLIT_TARGET_PREFIX_TRUE_KEY, 'autoload_commands');
         $filePrefixFalse  = self::getExtraKey(self::SPLIT_TARGET_PREFIX_FALSE_KEY, 'autoload_framework');