Fix another bug in diffOperationToTextEdit

We were taking max of l and sl but the position of an insertion in
the newer document is irrelevant since the edits will be applied
from bottom to top.

Author: sureyeaah

src/Ide/PluginUtils.hs

@@ -70,10 +70,8 @@ diffTextEdit fText f2Text withDeletions = J.List r
     -- fm has a range wrt to the changed file, which starts in the current file at l + 1
     -- So the range has to be shifted to start at l + 1
       where
-        range = J.Range (J.Position (l' - 1) 0)
-                        (J.Position (l' - 1) 0)
-        l' = max (l + 1) sl -- Needed to add at the end of the file
-        sl = fst $ lrNumbers fm
+        range = J.Range (J.Position l 0)
+                        (J.Position l 0)
         nt = T.pack $ unlines $ lrContents fm