Drop unneeded steps from updateDependencies

Do not download closure compiler for ant,
do not rebuild markdown anymore,
do not build protobuf-lite.

generators/infrastructure/check-library-abi-version.kts

@@ -1,84 +0,0 @@
-/*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.infrastructure
-
-import java.io.File
-import java.util.jar.JarFile
-import org.jetbrains.org.objectweb.asm.*
-
-/**
- * Checks that the two given Kotlin libraries have the same ABI version.
- * If versions are equal, returns with exit code 0, otherwise returns with exit code 3.
- * Some additional information is printed to stderr
- */
-
-fun loadClassVersions(bytes: ByteArray): Pair<List<Int>, List<Int>>? {
-    var metadata: IntArray? = null
-    var bytecode: IntArray? = null
-    ClassReader(bytes).accept(object : ClassVisitor(Opcodes.ASM5) {
-        override fun visitAnnotation(desc: String, visible: Boolean): AnnotationVisitor? {
-            if (desc != "Lkotlin/Metadata;") return null
-
-            return object : AnnotationVisitor(Opcodes.ASM5) {
-                override fun visit(name: String, value: Any) {
-                    when (name) {
-                        "mv" -> metadata = value as IntArray
-                        "bv" -> bytecode = value as IntArray
-                    }
-                }
-            }
-        }
-    }, 0)
-    return if (metadata != null && bytecode != null) Pair(metadata!!.toList(), bytecode!!.toList()) else null
-}
-
-fun loadVersions(library: File): String {
-    JarFile(library).use { jarFile ->
-        for (entry in jarFile.entries()) {
-            if (entry.name.endsWith(".class")) {
-                val classBytes = jarFile.getInputStream(entry).readBytes()
-                loadClassVersions(classBytes)?.let {
-                    val (metadata, bytecode) = it
-                    return "metadata = ${metadata.joinToString(".")}, bytecode = ${bytecode.joinToString(".")}"
-                }
-            }
-        }
-    }
-    
-    error("No Kotlin classes were found in $library")
-}
-
-fun main(args: Array<String>) {
-    if (args.size != 2) {
-        error("Usage: kotlinc -script check-library-abi-version.kts <jar-1> <jar-2>")
-    }
-    
-    val library1 = File(args[0])
-    val library2 = File(args[1])
-
-    val v1 = loadVersions(library1)
-    val v2 = loadVersions(library2)
-
-    if (v1 != v2) {
-        System.err.println("ABI versions differ:")
-        System.err.println("  $library1: $v1")
-        System.err.println("  $library2: $v2")
-        System.exit(3)
-    }
-}
-
-main(args)