Revert "TEDEFO-1694 search-metadata.json, modification of efx for TI-…

…Title"

This reverts commit 76c0479.

This changed caused a problem in TEDWEB, see TEDEFO-1749.

.ted/tedweb/search-metadata.json

@@ -128,7 +128,7 @@
 		"comment": "Languages in which tenders may be submitted"
 	},
 	"TI-Title": {
-		"efx": "{ND-Root} ${value-union(/BT-21-Procedure, /OPP-121-Business)}",
+		"efx": "{ND-Root} ${/BT-21-Procedure}",
 		"comment": "(TI) Title (Title of the document)"
 	},
 	"TI-CPV": {