Revert "MT#21227 Add MySQL check to validate passwords for all users"

It doesn't work as expected. I was not able to force goss validate
empty output on stdout/stderr. I will contact goss maintainer here.
Reverted this to have nightly tests fixed.

This reverts commit 71ba85f157.

Change-Id: I555954dbfd173bcdfccaaa80792316d5b681e09b

ce/11_mysql_paswords.json.tt2

@@ -1,10 +0,0 @@
-{
-    "command": {
-        mysql -Bs mysql -e 'SELECT User,Host,Password FROM user WHERE (Password = "" OR Password LIKE "!%") AND User != "root"': {
-            "comment": "There must be no users without password (root is an exception here, customer must set it later)"
-            "exit-status": 0,
-            "stdout": [],
-            "stderr": []
-        }
-    }
-}

ce/goss.json.tt2

@@ -13,7 +13,6 @@
         "08_system_ports.json": {},
         "09_system_dns.json": {},
         "10_sites_ok.json": {},
-        "11_mysql_paswords.json": {},
         "99_dummy.json": {}
     }
 }

pro/11_mysql_paswords.json.tt2

@@ -1 +0,0 @@
-../ce/11_mysql_paswords.json.tt2