Minor, suppress 1.3 language version warnings

compiler/util-io/build.gradle.kts

@@ -3,8 +3,6 @@ plugins {
     id("jps-compatible")
 }
 
-description = "Kotlin/Native utils"
-
 dependencies {
     compile(kotlinStdlib())
     testImplementation(commonDep("junit:junit"))
@@ -17,12 +15,14 @@ sourceSets {
 
 tasks {
     withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-        kotlinOptions.languageVersion = "1.3"
+        kotlinOptions {
-        kotlinOptions.apiVersion = "1.3"
+            languageVersion = "1.3"
+            apiVersion = "1.3"
+            freeCompilerArgs += "-Xsuppress-version-warnings"
+        }
     }
 }
 
 publish()
 
 standardPublicJars()
-

native/utils/build.gradle.kts

@@ -21,8 +21,11 @@ sourceSets {
 
 tasks {
     withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-        kotlinOptions.languageVersion = "1.3"
+        kotlinOptions {
-        kotlinOptions.apiVersion = "1.3"
+            languageVersion = "1.3"
+            apiVersion = "1.3"
+            freeCompilerArgs += "-Xsuppress-version-warnings"
+        }
     }
 }