jwg12 revert deletion of reducer

[aothms]

Add back IfcCableCarrierFittingTypeEnum.REDUCER

[aothms]

--- tmp/a/IFC.exp	2022-07-08 17:21:37.704856600 +0200
+++ tmp/b/IFC.exp	2022-07-10 19:58:42.325523200 +0200
@@ -810,20 +810,21 @@
 TYPE IfcBurnerTypeEnum = ENUMERATION OF
 	(USERDEFINED
 	,NOTDEFINED);
 END_TYPE;
 
 TYPE IfcCableCarrierFittingTypeEnum = ENUMERATION OF
 	(BEND
 	,CONNECTOR
 	,CROSS
 	,JUNCTION
+	,REDUCER
 	,TEE
 	,TRANSITION
 	,USERDEFINED
 	,NOTDEFINED);
 END_TYPE;
 
 TYPE IfcCableCarrierSegmentTypeEnum = ENUMERATION OF
 	(CABLEBRACKET
 	,CABLELADDERSEGMENT
 	,CABLETRAYSEGMENT