Remove unnecessary PMD language module for kotlin

pmd-kotlin/src/main/java/net/sourceforge/pmd/lang/kotlin/KotlinLanguageModule.java

@@ -1,26 +0,0 @@
-/**
- * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
- */
-
-package net.sourceforge.pmd.lang.kotlin;
-
-import net.sourceforge.pmd.lang.BaseLanguageModule;
-
-/**
- * Language Module for Kotlin
- */
-public class KotlinLanguageModule extends BaseLanguageModule {
-
-    /** The name. */
-    public static final String NAME = "Kotlin";
-    /** The terse name. */
-    public static final String TERSE_NAME = "kotlin";
-
-    /**
-     * Create a new instance of Kotlin Language Module.
-     */
-    public KotlinLanguageModule() {
-        super(NAME, null, TERSE_NAME, null, "kt");
-        addVersion("1.3", null, true);
-    }
-}

pmd-kotlin/src/main/resources/META-INF/services/net.sourceforge.pmd.lang.Language

@@ -1 +0,0 @@
-net.sourceforge.pmd.lang.kotlin.KotlinLanguageModule

pmd-kotlin/src/test/java/net/sourceforge/pmd/LanguageVersionTest.java

@@ -1,27 +0,0 @@
-/**
- * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
- */
-
-package net.sourceforge.pmd;
-
-import java.util.Arrays;
-import java.util.Collection;
-
-import org.junit.runners.Parameterized.Parameters;
-
-import net.sourceforge.pmd.lang.LanguageRegistry;
-import net.sourceforge.pmd.lang.LanguageVersion;
-import net.sourceforge.pmd.lang.kotlin.KotlinLanguageModule;
-
-public class LanguageVersionTest extends AbstractLanguageVersionTest {
-
-    public LanguageVersionTest(String name, String terseName, String version, LanguageVersion expected) {
-        super(name, terseName, version, expected);
-    }
-
-    @Parameters
-    public static Collection<Object[]> data() {
-        return Arrays.asList(new Object[][] { { KotlinLanguageModule.NAME, KotlinLanguageModule.TERSE_NAME, "1.3",
-            LanguageRegistry.getLanguage(KotlinLanguageModule.NAME).getDefaultVersion(), }, });
-    }
-}