Remove duplicate code from transcludeblock parser (#4221)

core/modules/parsers/wikiparser/rules/transcludeblock.js

@@ -27,8 +27,6 @@ exports.init = function(parser) {
 };
 
 exports.parse = function() {
-	// Move past the match
-	this.parser.pos = this.matchRegExp.lastIndex;
 	// Move past the match
 	this.parser.pos = this.matchRegExp.lastIndex;
 	// Get the match details