[clang][Interp][NFC] Remove outdated FIXME comment

Virtual desturctors are already supported and tested in
AST/Interp/records.cpp.

Author: tbaederr

clang/lib/AST/Interp/ByteCodeExprGen.cpp

@@ -2951,7 +2951,6 @@ bool ByteCodeExprGen<Emitter>::emitPrimCast(PrimType FromT, PrimType ToT,
 /// When calling this, we have a pointer of the local-to-destroy
 /// on the stack.
 /// Emit destruction of record types (or arrays of record types).
-/// FIXME: Handle virtual destructors.
 template <class Emitter>
 bool ByteCodeExprGen<Emitter>::emitRecordDestruction(const Descriptor *Desc) {
   assert(Desc);

clang/test/AST/Interp/records.cpp

@@ -734,8 +734,6 @@ namespace VirtualDtors {
   }
 
   static_assert(foo());
-
-
 };
 
 namespace QualifiedCalls {