plugin/emacs: Don't use region intersection in Flymake while reporting

This is causing diagnostics to not be cleared sometimes (see quick-lint#398), it
was first introduced for developement, because restarting Flymake
without changes in buffers would not delete old diagnostics, I think
it's fine if we not specify this option.

However I suspect this is a bug in Flymake.

Signed-off-by: wagner riffel <w@104d.net>
(cherry picked from commit 6a223f8)

plugin/emacs/flymake-quicklintjs.el

@@ -87,8 +87,7 @@ REPORT-FN is Flymake's callback."
                                         (buffer-substring-no-properties
                                          (point-min) (point-max)))))))
                        (if (or diags (zerop (process-exit-status p)))
-                           (funcall report-fn diags
-                                    :region (cons (point-min) (point-max)))
+                           (funcall report-fn diags)
                          (funcall report-fn
                                   :panic :explanation
                                   (buffer-substring