delete some information from my footer

I have to remove this information from my footer "joomla! is free software realsed under the GNU General public Licence. mobile version by Mobile joomla")
but i do not know how? help me please!

Install "Remove Support Ads" plugin (access to the plugin is included into your MJPro subscription), publish it and set to hide Joomla's copyright in its settings.

i have installed and published the plugin but i don't know where can i hide joomlas copyright. 

There are two options in the plugin's settings: hide ads (it has no effect in MJPro/MJBasic) and hide joomla's copyright.

okay tank a lot ! it's working fine

dryabov wrote:

Hi, I can not find the extension . where can I download it?