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/consensus.yaml

@@ -1,27 +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: Consensus
-
-    summary_max_255_characters_no_formatting: >
-        When several nodes (usually most nodes on the network) all have
-        the same blocks in their locally-validated best block chain.
-
-    synonyms_shown_in_glossary_capitalize_first_letter:
-        - Consensus
-
-optional:
-    synonyms_and_pluralizations_not_shown_in_glossary:
-        - block chain consensus
-
-    not_to_be_confused_with_capitalize_first_letter:
-        - Social consensus (often used in discussion among developers to indicate that most people agree with a particular plan)
-        - Consensus rules (the rules that allow nodes to maintain consensus)
-
-    links_html_or_markdown_style_capitalize_first_letter:
-        - "[Consensus](/en/developer-guide#term-consensus) --- Bitcoin.org Developer Guide"
-
----