Get rid of trivial allowFlexible replacing

As the type is anyway replaced with not-nullable version
explicitly, the only thing that changes is what type is loaded
for String[][].class:
- before it would be Array<Array<String?>?>
- now it's Array<(out) Array<(out) String!>!>

It's both a minor change and new behaviour can be considered
as correct

compiler/testData/loadJava/compiledJava/annotations/ClassObjectArrayInParam.java

@@ -5,6 +5,6 @@ public class ClassObjectArrayInParam {
         Class<?>[] value();
     }
 
-    @Anno({ClassObjectArrayInParam.class, Nested.class, String.class})
+    @Anno({ClassObjectArrayInParam.class, Nested.class, String.class, java.util.List.class, String[][].class, int[][].class})
     public static class Nested {}
 }

compiler/testData/loadJava/compiledJava/annotations/ClassObjectArrayInParam.txt

@@ -8,7 +8,7 @@ public open class ClassObjectArrayInParam {
         public final val value: kotlin.Array<kotlin.reflect.KClass<*>>
     }
 
-    @test.ClassObjectArrayInParam.Anno(value = {test.ClassObjectArrayInParam::class, test.ClassObjectArrayInParam.Nested::class, kotlin.String::class}) public open class Nested {
+    @test.ClassObjectArrayInParam.Anno(value = {test.ClassObjectArrayInParam::class, test.ClassObjectArrayInParam.Nested::class, kotlin.String::class, kotlin.collections.(Mutable)List<(raw) kotlin.Any?>::class, kotlin.Array<(out) kotlin.Array<(out) kotlin.String!>!>::class, kotlin.Array<(out) kotlin.IntArray!>::class}) public open class Nested {
         public constructor Nested()
     }
 }

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/lazy/descriptors/LazyJavaAnnotationDescriptor.kt

@@ -132,7 +132,7 @@ class LazyJavaAnnotationDescriptor(
         // Class type is never nullable in 'Foo.class' in Java
         val type = TypeUtils.makeNotNullable(c.typeResolver.transformJavaType(
                 javaType,
-                TypeUsage.COMMON.toAttributes(allowFlexible = false))
+                TypeUsage.COMMON.toAttributes())
         )
 
         val jlClass = c.module.resolveTopLevelClass(FqName("java.lang.Class"), NoLookupLocation.FOR_NON_TRACKED_SCOPE) ?: return null