Fix Elvis report: Remove trailing whitespace characters

https://github.com/inaka/elvis_core/blob/main/doc_rules/elvis_text_style/no_trailing_whitespace.md

src/ejabberd_auth_jwt.erl

@@ -44,9 +44,9 @@
 %%%----------------------------------------------------------------------
 start(Host) ->
     %% We add our default JWT verifier with hook priority 100.
-    %% So if you need to check or verify your custom JWT before the 
+    %% So if you need to check or verify your custom JWT before the
-    %% default verifier, It's better to use this hook with priority 
+    %% default verifier, It's better to use this hook with priority
-    %% little than 100 and return bool() or {stop, bool()} in your own 
+    %% little than 100 and return bool() or {stop, bool()} in your own
     %% callback function.
     ejabberd_hooks:add(check_decoded_jwt, Host, ?MODULE, check_decoded_jwt, 100),
     case ejabberd_option:jwt_key(Host) of

src/ejabberd_web.erl

@@ -1,7 +1,6 @@
 %%%----------------------------------------------------------------------
 %%% File    : ejabberd_web.erl
 %%% Author  : Alexey Shchepin <alexey@process-one.net>
-%%% Purpose : 
 %%% Purpose :
 %%% Created : 28 Feb 2004 by Alexey Shchepin <alexey@process-one.net>
 %%%

src/mod_bosh_sql.erl

@@ -1,7 +1,7 @@
 %%%----------------------------------------------------------------------
 %%% File    : mod_bosh_sql.erl
 %%% Author  : Evgeny Khramtsov <ekhramtsov@process-one.net>
-%%% Purpose : 
+%%% Purpose :
 %%% Created : 28 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
 %%%
 %%%

src/mod_push_sql.erl

@@ -1,7 +1,7 @@
 %%%----------------------------------------------------------------------
 %%% File    : mod_push_sql.erl
 %%% Author  : Evgeniy Khramtsov <ekhramtsov@process-one.net>
-%%% Purpose : 
+%%% Purpose :
 %%% Created : 26 Oct 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net>
 %%%
 %%%

src/mod_vcard_sql.erl

@@ -263,7 +263,7 @@ remove_user(LUser, LServer) ->
                      " where lusername=%(LUser)s and %(LServer)H"))
       end).
 
-export(_Server) ->   
+export(_Server) ->
     [{vcard,
       fun(Host, #vcard{us = {LUser, LServer}, vcard = VCARD})
             when LServer == Host ->