[gnome-calendar] Don't claim to support opening ICS files

[Michael Catanzaro <mcatanzaro src gnome org>]

commit b378c672df33979cf901dd202331fb0dd1c86fd4
Author: Michael Catanzaro <mcatanzaro posteo net>
Date:   Tue Sep 18 14:01:02 2018 +0000

    Don't claim to support opening ICS files
    
    Calendar doesn't use %U and can't open files on command line, so it shouldn't claim to.
    
    Fixes #313

 data/org.gnome.Calendar.desktop.in | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/data/org.gnome.Calendar.desktop.in b/data/org.gnome.Calendar.desktop.in
index 71b7f1b6..376d31c0 100644
--- a/data/org.gnome.Calendar.desktop.in
+++ b/data/org.gnome.Calendar.desktop.in
@@ -10,5 +10,4 @@ StartupNotify=true
 Categories=GNOME;GTK;Office;Calendar;Core;
 # Translators: Search terms to find this application. Do NOT translate or localize the semicolons! The list 
MUST also end with a semicolon!
 Keywords=Calendar;Event;Reminder;
-MimeType=text/calendar;
 DBusActivatable=true