[mpp] Ignore KMM-related diagnostic tests

Currently, CI runs on Linux agents which can not work with iOS targets

libraries/tools/kotlin-gradle-plugin/src/functionalTest/kotlin/org/jetbrains/kotlin/gradle/unitTests/diagnosticsTests/MppDiagnosticsFunctionalTest.kt

@@ -5,18 +5,16 @@
 
 package org.jetbrains.kotlin.gradle.unitTests.diagnosticsTests
 
-import org.gradle.api.InvalidUserCodeException
 import org.gradle.api.attributes.Attribute
-import org.jetbrains.kotlin.gradle.plugin.diagnostics.KotlinToolingDiagnostics
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJvmWithJavaTargetPreset
 import org.jetbrains.kotlin.gradle.util.*
+import org.junit.Ignore
 import org.junit.Test
-import kotlin.jvm.Throws
-import kotlin.test.assertTrue
 
 class MppDiagnosticsFunctionalTest {
 
     @Test
+    @Ignore
     fun testKmmLibrary() {
         checkDiagnosticsWithMppProject("kmmLibrary") {
             androidLibrary {
@@ -31,6 +29,7 @@ class MppDiagnosticsFunctionalTest {
     }
 
     @Test
+    @Ignore
     fun testKmmApplication() {
         checkDiagnosticsWithMppProject("kmmApplication") {
             androidApplication {