Delete unused KtAbiPluginArgs.kt (#698)

diff --git a/src/main/kotlin/io/bazel/kotlin/builder/tasks/jvm/KtAbiPluginArgs.kt b/src/main/kotlin/io/bazel/kotlin/builder/tasks/jvm/KtAbiPluginArgs.kt
deleted file mode 100644
index 96f06ed..0000000
--- a/src/main/kotlin/io/bazel/kotlin/builder/tasks/jvm/KtAbiPluginArgs.kt
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright 2020 The Bazel Authors. All rights reserved.
- *
- * 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 io.bazel.kotlin.builder.tasks.jvm
-
-import io.bazel.kotlin.builder.toolchain.KotlinToolchain
-
-class KtAbiPluginArgs constructor(
-  val jvmAbiGen: KotlinToolchain.CompilerPlugin,
-  val skipCodeGen: KotlinToolchain.CompilerPlugin
-)