Remove 'UnitTestList' hook

No longer needed now that extension unittests are autodiscovered.

Bug: T142120
Bug: T142121
Change-Id: I08e3fdf24481a0404c2bf9822d5d02b815cb2e76

Math.hooks.php

@@ -356,19 +356,6 @@ class MathHooks {
 		return true;
 	}
 
-	/**
-	 * Links to the unit test files for the test cases.
-	 *
-	 * @param string $files
-	 * @return boolean (true)
-	 */
-	static function onRegisterUnitTests( &$files ) {
-		$testDir = __DIR__ . '/tests/';
-		$files = array_merge( $files, glob( "$testDir/*Test.php" ) );
-
-		return true;
-	}
-
 	/**
 	 * @param Parser $parser
 	 * @param $text

extension.json

@@ -54,9 +54,6 @@
 		"ParserTestTables": [
 			"MathHooks::onParserTestTables"
 		],
-		"UnitTestsList": [
-			"MathHooks::onRegisterUnitTests"
-		],
 		"PageRenderingHash": [
 			"MathHooks::onPageRenderingHash"
 		],