Fix docs build

src/saltext/mysql/cache/mysql_cache.py

@@ -36,8 +36,6 @@
     # This may be enabled to create a fresh connection on every call
     mysql.fresh_connection: false
 
-Related docs can be found in the `python-mysql documentation`_.
-
 To use the mysql as a minion data cache backend, set the master ``cache`` config
 value to ``mysql``:
 
@@ -47,8 +45,6 @@
 
 
 .. _`MySQL documentation`: https://github.com/coreos/mysql
-.. _`python-mysql documentation`: http://python-mysql.readthedocs.io/en/latest/
-
 """
 
 import copy

src/saltext/mysql/modules/mysql.py

@@ -186,6 +186,13 @@
     "XA_RECOVER_ADMIN",
 ]
 
+# The empty docstring is needed to ignore the developer note during
+# docs rendering (quick fix). There might be better ways.
+
+"""
+"""
+
+# pylint: disable=pointless-string-statement
 r'''
 DEVELOPER NOTE: ABOUT arguments management, escapes, formats, arguments and
 security of SQL.