jwg12 ifc4 IfcBuildingSystemTypeEnum

[aothms]

Revert IfcBuildingSystemTypeEnum to IFC4 state

[aothms]

--- tmp/a/IFC.exp	2022-07-08 17:31:42.614377900 +0200
+++ tmp/b/IFC.exp	2022-07-10 19:58:54.992353300 +0200
@@ -772,27 +772,24 @@
 
 TYPE IfcBuildingElementProxyTypeEnum = ENUMERATION OF
 	(COMPLEX
 	,ELEMENT
 	,PARTIAL
 	,USERDEFINED
 	,NOTDEFINED);
 END_TYPE;
 
 TYPE IfcBuildingSystemTypeEnum = ENUMERATION OF
-	(EROSIONPREVENTION
-	,FENESTRATION
+	(FENESTRATION
 	,FOUNDATION
 	,LOADBEARING
 	,OUTERSHELL
-	,PRESTRESSING
-	,REINFORCING
 	,SHADING
 	,TRANSPORT
 	,USERDEFINED
 	,NOTDEFINED);
 END_TYPE;
 
 TYPE IfcBuiltSystemTypeEnum = ENUMERATION OF
 	(EROSIONPREVENTION
 	,FENESTRATION
 	,FOUNDATION