FIR: get rid of symbolProvider.getClassDeclaredMemberScope at all

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/JavaSymbolProvider.kt

@@ -64,12 +64,6 @@ class JavaSymbolProvider(
     override fun getTopLevelCallableSymbols(packageFqName: FqName, name: Name): List<FirCallableSymbol<*>> =
         emptyList()
 
-    // NB: looks like it's better not to use this function at all...
-    override fun getClassDeclaredMemberScope(classId: ClassId): FirScope? {
-        // Anyway we cannot build correct declared member scope here
-        return null
-    }
-
     override fun getClassUseSiteMemberScope(
         classId: ClassId,
         useSiteSession: FirSession,

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/deserialization/KotlinDeserializedJvmSymbolsProvider.kt

@@ -29,7 +29,6 @@ import org.jetbrains.kotlin.fir.references.impl.FirErrorNamedReferenceImpl
 import org.jetbrains.kotlin.fir.references.impl.FirResolvedNamedReferenceImpl
 import org.jetbrains.kotlin.fir.resolve.*
 import org.jetbrains.kotlin.fir.scopes.FirScope
-import org.jetbrains.kotlin.fir.scopes.impl.declaredMemberScope
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
 import org.jetbrains.kotlin.fir.types.impl.FirErrorTypeRefImpl
@@ -393,11 +392,6 @@ class KotlinDeserializedJvmSymbolsProvider(
         }
     }
 
-    override fun getClassDeclaredMemberScope(classId: ClassId) =
-        findRegularClass(classId)?.let {
-            declaredMemberScope(it)
-        }
-
     private fun getPackageParts(packageFqName: FqName): Collection<PackagePartsCacheData> {
         return packagePartsCache.getOrPut(packageFqName) {
             try {