Remove call to await after kapt work is submitted

Await blocks parallel execution within a project.
Since there are no actions in the task after
`await()`, it is safe to delete the call.

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptWithoutKotlincTask.kt

@@ -95,8 +95,6 @@ open class KaptWithoutKotlincTask @Inject constructor(private val workerExecutor
             }
             logger.info("Kapt worker classpath: ${config.classpath}")
         }
-
-        workerExecutor.await()
     }
 }