Remove unused config variables from extension.json

Bug: T228547
Change-Id: I0aa7b624b645c3773b0d758634d370a494d1028a

extension.json

@@ -39,9 +39,6 @@
 	"DefaultUserOptions": {
 		"math": "mathml"
 	},
-	"ExtensionFunctions": [
-		"MathHooks::setup"
-	],
 	"ExtensionMessagesFiles": {
 		"MathAlias": "Math.alias.php",
 		"MathAliasNoTranslate": "Math.alias.noTranslate.php"
@@ -73,7 +70,6 @@
 		]
 	},
 	"config": {
-		"MathCheckFiles": true,
 		"MathDefaultLaTeXMLSetting": {
 			"format": "xhtml",
 			"whatsin": "math",
@@ -98,27 +94,21 @@
 			],
 			"linelength": 90
 		},
-		"MathDirectory": false,
 		"MathDisableTexFilter": "new",
 		"MathEnableExperimentalInputFormats": false,
-		"MathFileBackend": false,
 		"MathLaTeXMLTimeout": 240,
 		"MathLaTeXMLUrl": "http://gw125.iu.xsede.org:8888",
 		"MathMathMLTimeout": 20,
 		"MathMathMLUrl": "http://mathoid.testme.wmflabs.org",
 		"MathFullRestbaseURL": "https://wikimedia.org/api/rest_",
 		"MathConcurrentReqs": 50,
-		"MathPath": false,
-		"MathTexvcCheckExecutable": false,
 		"MathoidCli": false,
 		"MathValidModes": [
 			"png",
 			"source",
 			"mathml"
 		],
-		"MathEnableWikibaseDataType": true,
-		"Texvc": false,
-		"TexvcBackgroundColor": "transparent"
+		"MathEnableWikibaseDataType": true
 	},
 	"VisualEditorPluginModules": [
 		"ext.math.visualEditor"

src/MathHooks.php

@@ -148,22 +148,6 @@ class MathHooks {
 		return true;
 	}
 
-	/**
-	 * Set up $wgMathPath and $wgMathDirectory globals if they're not already set.
-	 */
-	public static function setup() {
-		global $wgMathPath, $wgMathDirectory,
-			$wgUploadPath, $wgUploadDirectory;
-
-		if ( $wgMathPath === false ) {
-			$wgMathPath = "{$wgUploadPath}/math";
-		}
-
-		if ( $wgMathDirectory === false ) {
-			$wgMathDirectory = "{$wgUploadDirectory}/math";
-		}
-	}
-
 	/**
 	 * Register the <math> tag with the Parser.
 	 *

tests/phpunit/MathoidCliTest.php

@@ -1,7 +1,7 @@
 <?php
 
 /**
- * @covers MathInputCheckTexvc
+ * @covers MathMathMLCli
  *
  * @group Math
  *