[Gradle] Update Gradle integration tests code as the new stdlib is now available

#KTI-1221 In Progress

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/KaptIncrementalIT.kt

@@ -10,6 +10,7 @@ import java.nio.file.Path
 import java.util.*
 import kotlin.io.path.createDirectories
 import kotlin.io.path.deleteIfExists
+import kotlin.io.path.deleteRecursively
 import kotlin.io.path.writeText
 import kotlin.test.assertEquals
 

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/android/KotlinAndroidMppIT.kt

@@ -22,10 +22,7 @@ import java.io.File
 import java.nio.file.Files
 import java.nio.file.Path
 import java.util.zip.ZipFile
-import kotlin.io.path.appendText
-import kotlin.io.path.extension
-import kotlin.io.path.readText
-import kotlin.io.path.writeText
+import kotlin.io.path.*
 import kotlin.streams.toList
 import kotlin.test.*
 

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/XCFrameworkIT.kt

@@ -11,6 +11,7 @@ import org.jetbrains.kotlin.gradle.util.replaceFirst
 import org.jetbrains.kotlin.gradle.util.replaceText
 import org.junit.jupiter.api.DisplayName
 import org.junit.jupiter.api.condition.OS
+import kotlin.io.path.deleteRecursively
 
 @OsCondition(supportedOn = [OS.MAC], enabledOnCI = [OS.MAC])
 @DisplayName("Tests for K/N with apple XCFramework")

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinJvmApiTest.kt

@@ -9,6 +9,7 @@ import org.gradle.util.GradleVersion
 import org.jetbrains.kotlin.gradle.testbase.*
 import org.junit.jupiter.api.DisplayName
 import kotlin.io.path.createDirectories
+import kotlin.io.path.deleteRecursively
 import kotlin.io.path.writeText
 
 @DisplayName("JVM API validation")

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/testbase/pathHelpers.kt

@@ -87,26 +87,6 @@ internal fun Path.copyRecursively(dest: Path) {
     })
 }
 
-internal fun Path.deleteRecursively() {
-    Files.walkFileTree(this, object : SimpleFileVisitor<Path>() {
-        override fun visitFile(
-            file: Path,
-            fileAttributes: BasicFileAttributes
-        ): FileVisitResult {
-            file.deleteIfExists()
-            return FileVisitResult.CONTINUE
-        }
-
-        override fun postVisitDirectory(
-            dir: Path,
-            exception: IOException?
-        ): FileVisitResult {
-            dir.deleteIfExists()
-            return FileVisitResult.CONTINUE
-        }
-    })
-}
-
 internal fun Iterable<String>.toPaths(): List<Path> = map { Paths.get(it) }
 
 /**