Delete unnecessary cites

bibliography.bib

-
 @misc{djangoproject_models_2016,
   title = {Models and Databases | {{Django}} Documentation | {{Django}}},
   timestamp = {2016-12-19T03:31:30Z},
@@ -6,27 +5,6 @@
   howpublished = {\url{https://docs.djangoproject.com/en/1.10/topics/db/}},
   author = {{djangoproject}},
   month = dec,
-  year = {2016},
-  file = {Models and databases | Django documentation | Django:/home/stsewd/.mozilla/firefox/z0z75z8a.default/zotero/storage/94R8J375/db.html:text/html}
-}
-
-@misc{jetbrains_pycharm_2016,
-  title = {{{PyCharm}} 2016.1 {{Help}} :: {{Creating Django Project}}},
-  timestamp = {2016-12-19T03:45:11Z},
-  urldate = {2016-12-19},
-  howpublished = {\url{https://www.jetbrains.com/help/pycharm/2016.1/creating-django-project.html}},
-  author = {{jetbrains}},
-  month = dec,
-  year = {2016},
-  file = {PyCharm 2016.1 Help \:\: Creating Django Project:/home/stsewd/.mozilla/firefox/z0z75z8a.default/zotero/storage/TGCAU5RK/creating-django-project.html:text/html}
+  year = {2016}
 }
 
-@misc{_mojarra_????,
-  title = {Mojarra 2.1 - {{Download}}},
-  timestamp = {2016-12-19T19:41:37Z},
-  urldate = {2016-12-19},
-  howpublished = {\url{https://javaserverfaces.java.net/nonav/2.1/download.html}},
-  file = {Mojarra 2.1 - Download:/home/stsewd/.mozilla/firefox/z0z75z8a.default/zotero/storage/542DZ6QE/download.html:text/html}
-}
-
-