Revert "Merge pull #793: Dev Docs: New Glossary & JS Search Box"

This reverts commit e3dcf0ce1f, reversing
changes made to c71e9fdf2d.

Once again we had a broken new plugin that Travis CI and local building
didn't catch.

_data/glossary/en/dns-seed.yaml

@@ -1,28 +0,0 @@
----
-# This file is licensed under the MIT License (MIT) available on
-# http://opensource.org/licenses/MIT.
-
-required:
-                                           #-------------40 characters-------------#
-    title_max_40_characters_no_formatting: DNS Seed
-
-    summary_max_255_characters_no_formatting: >
-        A DNS server which returns IP addresses of full nodes on the
-        Bitcoin network to assist in peer discovery.
-
-    synonyms_shown_in_glossary_capitalize_first_letter:
-        - DNS seed
-
-optional:
-    synonyms_and_pluralizations_not_shown_in_glossary:
-        - DNS seeds
-
-    not_to_be_confused_with_capitalize_first_letter:
-        - HD wallet seeds
-
-    links_html_or_markdown_style_capitalize_first_letter:
-        - "[DNS seed](/en/developer-guide#term-dns-seed) --- Bitcoin.org Developer Guide"
-        - "[DNS seeds](https://en.bitcoin.it/wiki/Satoshi_Client_Node_Discovery#DNS_Addresses) --- Bitcoin Wiki"
-        - "[What is a DNS seed versus a seed node?](http://bitcoin.stackexchange.com/q/14371) --- Bitcoin StackExchange"
-
----