Revert "skip err log on os.IsNotExist (#330)" (#332)

This reverts commit bffe20c.

Author: zoom-ua

base/server.go

@@ -345,7 +345,7 @@ func (s *Server) handlePProf(msg chat1.MsgSummary) error {
 			// Cleanup after the file is sent.
 			time.Sleep(time.Minute)
 			s.Debug("cleaning up %s", outfile)
-			if err = os.Remove(outfile); err != nil && !os.IsNotExist(err) {
+			if err = os.Remove(outfile); err != nil {
 				s.Errorf("unable to clean up %s: %v", outfile, err)
 			}
 		}()

webhookbot/webhookbot/http.go

@@ -119,7 +119,7 @@ func (h *HTTPSrv) handleHook(w http.ResponseWriter, r *http.Request) {
 					// Cleanup after the file is sent.
 					time.Sleep(time.Minute)
 					h.Debug("cleaning up %s", filePath)
-					if err = os.Remove(filePath); err != nil && !os.IsNotExist(err) {
+					if err = os.Remove(filePath); err != nil {
 						h.Errorf("unable to clean up %s: %v", filePath, err)
 					}
 				}()