Get rid of ConeAbbreviatedType::directExpansion

It becomes necessary after extracting supertypes resolution into a
separate phase.
But also it looks reasonable because direct expansion actually depends
on the module we are looking from.

compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypes.kt

@@ -104,8 +104,6 @@ abstract class ConeClassType : ConeClassLikeType()
 
 abstract class ConeAbbreviatedType : ConeClassLikeType() {
     abstract val abbreviationLookupTag: ConeClassLikeLookupTag
-
-    abstract val directExpansion: ConeClassLikeType
 }
 
 abstract class ConeTypeParameterType : ConeLookupTagBasedType() {

compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/impl/Impl.kt

@@ -20,7 +20,6 @@ open class ConeClassTypeImpl(
 class ConeAbbreviatedTypeImpl(
     override val abbreviationLookupTag: ConeClassLikeLookupTag,
     override val typeArguments: Array<out ConeKotlinTypeProjection>,
-    override val directExpansion: ConeClassLikeType,
     isNullable: Boolean
 ) : ConeAbbreviatedType() {
     override val lookupTag: ConeClassLikeLookupTag