Re-disabled stdlib Date test

It seems to take too much time and memory so the runner is terminated

Author: dtim

utbot-framework/src/test/kotlin/org/utbot/examples/stdlib/DateExampleTest.kt

@@ -1,5 +1,6 @@
 package org.utbot.examples.stdlib
 
+import org.junit.jupiter.api.Disabled
 import org.junit.jupiter.api.Tag
 import org.junit.jupiter.api.Test
 import org.utbot.examples.UtValueTestCaseChecker
@@ -8,6 +9,7 @@ import org.utbot.examples.isException
 import org.utbot.examples.withUsingReflectionForMaximizingCoverage
 import java.util.Date
 
+@Disabled("Java 11 transition -- these tests seems to take too much time and memory")
 class DateExampleTest : UtValueTestCaseChecker(testClass = DateExample::class) {
     @Suppress("SpellCheckingInspection")
     @Tag("slow")