Don't test the Go target with the scala grammar

It's too slow.

Author: mike-lischke

scala/desc.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <desc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../_scripts/desc.xsd">
-   <targets>CSharp;Cpp;Dart;Go;Java;JavaScript;TypeScript;Python3</targets>
+   <targets>CSharp;Cpp;Dart;Java;JavaScript;TypeScript;Python3</targets>
    <entry-point>compilationUnit</entry-point>
 </desc>