Remove projectDir input from KaptWithoutKotlincTask

It is redundant since the task would be restarted when project dir changes,
because paths of sources would also change

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/Kapt3KotlinGradleSubplugin.kt

@@ -378,8 +378,6 @@ class Kapt3KotlinGradleSubplugin : KotlinGradleSubplugin<KotlinCompile> {
 
         if (kaptTask is KaptWithoutKotlincTask) {
             with(kaptTask) {
-                projectDir = project.projectDir
-
                 isVerbose = project.isKaptVerbose()
                 mapDiagnosticLocations = kaptExtension.mapDiagnosticLocations
                 annotationProcessorFqNames = kaptExtension.processors.split(',').filter { it.isNotEmpty() }

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

@@ -25,10 +25,6 @@ open class KaptWithoutKotlincTask @Inject constructor(private val workerExecutor
     val kaptJars: Collection<File>
         get() = project.configurations.getByName(KAPT_WORKER_DEPENDENCIES_CONFIGURATION_NAME).resolve()
 
-    @get:InputFile
-    @get:PathSensitive(PathSensitivity.RELATIVE)
-    lateinit var projectDir: File
-
     @get:Input
     var isVerbose: Boolean = false
 
@@ -51,7 +47,7 @@ open class KaptWithoutKotlincTask @Inject constructor(private val workerExecutor
         clearOutputDirectories()
 
         val paths = KaptPathsForWorker(
-            projectDir,
+            project.projectDir,
             classpath.files.toList(),
             kaptClasspath.files.toList(),
             javaSourceRoots.toList(),