[Mod] Never write instrument envelope flags as extended instrument pr…

…operties to ITI / XI files. This was only required for ITPs.

git-svn-id: https://source.openmpt.org/svn/openmpt/trunk/OpenMPT@22534 56274372-70c3-4bfc-bfc3-4c3a0b034d27

soundlib/InstrumentExtensions.cpp

@@ -332,9 +332,6 @@ void WriteInstrumentHeaderStructOrField(ModInstrument * input, std::ostream &fil
 	WRITE_MPTHEADER_sized_member(	PitchEnv.nReleaseNode		, uint8		, MagicBE("PERN")	)
 	WRITE_MPTHEADER_sized_member(	PanEnv.nReleaseNode			, uint8		, MagicBE("AERN")	)
 	WRITE_MPTHEADER_sized_member(	VolEnv.nReleaseNode			, uint8		, MagicBE("VERN")	)
-	WRITE_MPTHEADER_sized_member(	PitchEnv.dwFlags			, uint8		, MagicBE("PFLG")	)
-	WRITE_MPTHEADER_sized_member(	PanEnv.dwFlags				, uint8		, MagicBE("AFLG")	)
-	WRITE_MPTHEADER_sized_member(	VolEnv.dwFlags				, uint8		, MagicBE("VFLG")	)
 	WRITE_MPTHEADER_sized_member(	midiPWD						, int8		, MagicBE("MPWD")	)
 	// clang-format on