maps:put/3 <-> #M{K => V}

Summary:
- `maps:put/3` has not been updated during map's rework
- `maps:put(K, V, M)` is now the same as `M#{K => V}`

Reviewed By: VLanvin

Differential Revision: D65497178

fbshipit-source-id: 8d78c69541ae4e1aac64186c674b73329f872d9d

eqwalizer/src/main/scala/com/whatsapp/eqwalizer/tc/ElabApplyCustom.scala

@@ -352,19 +352,12 @@ class ElabApplyCustom(pipelineContext: PipelineContext) {
             (subtype.join(valTy, defaultValTy), env1)
         }
 
-      case fqn @ RemoteId("maps", "put", 3) =>
-        val List(key, _, map) = args
-        key match {
-          case AtomLit(keyAtom) =>
-            val List(_, valTy, mapTy) = argTys
-            val mapCoercedTy = coerce(map, mapTy, anyMapTy)
-            val resTy = narrow.adjustMapType(mapCoercedTy, AtomLitType(keyAtom), valTy)
-            (resTy, env1)
-          case _ =>
-            val ft = util.getFunType(fqn)
-            val resTy = elabApply.elabApply(ft, args, argTys, env1)
-            (resTy, env1)
-        }
+      case RemoteId("maps", "put", 3) =>
+        val List(_, _, map) = args
+        val List(keyTy, valTy, mapTy) = argTys
+        val mapCoercedTy = coerce(map, mapTy, anyMapTy)
+        val mapTy1 = narrow.adjustMapType(mapCoercedTy, keyTy, valTy)
+        (mapTy1, env1)
 
       case RemoteId("maps", "map", 2) =>
         val List(funArg, map) = args