Revert "Update modeline with effort and task name on re-clock-in"

This reverts commit 4a4fbf1b8caa338a3a59f7b6f3f89b279615725d.

Clocking in the currently clocking task was leaving open clock entries
which is incorrect.  Updating the modeline is less important than
keeping correct clocking data.

lisp/org-clock.el

@@ -959,7 +959,7 @@ the clocking selection, associated with the letter `d'."
 	;; We are interrupting the clocking of a different task.
 	;; Save a marker to this task, so that we can go back.
 	;; First check if we are trying to clock into the same task!
-	(if (save-excursion
+	(when (save-excursion
 		(unless selected-task
 		  (org-back-to-heading t))
 		(and (equal (marker-buffer org-clock-hd-marker)
@@ -970,13 +970,12 @@ the clocking selection, associated with the letter `d'."
 			(if selected-task
 			    (marker-position selected-task)
 			  (point)))))
-	    (message "Clock continues in \"%s\"" org-clock-heading)
-	  (progn
-	    (move-marker org-clock-interrupted-task
-			 (marker-position org-clock-marker)
-			 (org-clocking-buffer))
-	    (let ((org-clock-clocking-in t))
-	      (org-clock-out t)))))
+	  (message "Clock continues in \"%s\"" org-clock-heading)
+	  (throw 'abort nil))
+	(move-marker org-clock-interrupted-task
+		     (marker-position org-clock-marker)
+		     (marker-buffer org-clock-marker))
+	(org-clock-out t))
 
       (when (equal select '(16))
 	;; Mark as default clocking task