@Mgx: I see that you are using Free version of Catch Evolution, where you can only use Featured Post Slider. This slider is created to highlight you post. So, you cannot remove that link. Instead if you use Catch Evolution Pro version, there is Featured Image slider where you can upload your image without or with link. It’s optional.
About the post in the homepage, it is the default way that WordPress uses in Blog. It will link to the post. To remove that link it’s bit difficult. You might need to hire developer to work for you on this customization.
I will guide you the process.
1. Build child theme of Catch Evolution Theme
2. Then copy content.php file in your child theme and remove the link from the title
3. For slider you can create functions.php file and copy catchevolution_sliders() function and edit that in your child theme.
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