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/null-data-transaction.yaml

@@ -1,31 +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: Null Data (OP_RETURN) Transaction
-
-    summary_max_255_characters_no_formatting: >
-        A standard transaction type which allows adding 40 bytes of
-        arbitrary data to the block chain up to once per transaction.
-
-    synonyms_shown_in_glossary_capitalize_first_letter:
-        - Null data transaction
-        - OP_RETURN transaction
-        - Data carrier transaction
-
-optional:
-    synonyms_and_pluralizations_not_shown_in_glossary:
-        - null data transactions
-        - op_return transactions
-        - data carrier transactions
-
-    not_to_be_confused_with_capitalize_first_letter:
-        - OP_RETURN (an op code used in one of the outputs in an OP_RETURN transaction)
-
-    links_html_or_markdown_style_capitalize_first_letter:
-        - "[Null data transaction](/en/developer-guide#term-null-data) --- Bitcoin.org Developer Guide"
-        - "[Pull request implement null data transactions](https://github.com/bitcoin/bitcoin/pull/2738) --- GitHub"
-
----