Remove buildLogicTargetJavaVersion

Author: paul-dingemans

build-logic/build.gradle.kts

@@ -1,6 +1,3 @@
-import org.jetbrains.kotlin.gradle.dsl.JvmTarget
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 plugins {
     `kotlin-dsl`
 }
@@ -20,18 +17,6 @@ kotlin {
     )
 }
 
-// TODO: Remove setting `options.release` and `compilerOptions.jvmTarget` after upgrade to Kotlin Gradle Plugin 1.9
-//  build-logic is an internal project and given we know how the "actual" project is built - it's fine to target current java here as well.
-//  @see https://github.com/pinterest/ktlint/pull/2120#discussion_r1260229055 for more details
-val buildLogicTargetJavaVersion = JavaVersion.VERSION_17
-tasks.withType<JavaCompile>().configureEach {
-    options.release = buildLogicTargetJavaVersion.majorVersion.toInt()
-}
-tasks.withType<KotlinCompile>().configureEach {
-    // Convert Java version (e.g. "1.8" or "11") to Kotlin JvmTarget ("8" resp. "11")
-    compilerOptions.jvmTarget = JvmTarget.fromTarget(buildLogicTargetJavaVersion.toString())
-}
-
 dependencies {
     val kotlinPlugin =
         if (hasProperty("kotlinDev")) {