took out "relabel" options for COMBINE

HISTORY.md

@@ -91,6 +91,7 @@
 ### 2019-06-25
 * threads: 2 optional formal inputs for rings in MAP, KEEP, FIND, COMBINE: index and source list
 * objects, threads: renamed COMBINE label, switching the inputs
+* objects: took out "relabel" options for COMBINE
 
 ### 2019-06-24
 * removed "such that" from KEEP and FIND block labels

src/objects.js

@@ -1583,10 +1583,9 @@ SpriteMorph.prototype.blockAlternatives = {
     doHideVar: ['doShowVar'],
 
     // lists - HOFs
-    reportMap: ['reportKeep', 'reportFindFirst', 'reportCombine'],
-    reportKeep: ['reportFindFirst', 'reportMap', 'reportCombine'],
-    reportCombine: ['reportMap', 'reportKeep', 'reportFindFirst'],
-    reportFindFirst: ['reportKeep', 'reportMap', 'reportCombine']
+    reportMap: ['reportKeep', 'reportFindFirst'],
+    reportKeep: ['reportFindFirst', 'reportMap'],
+    reportFindFirst: ['reportKeep', 'reportMap']
 };
 
 // SpriteMorph instance creation