disable "view all post by"

Hello

i have a question:
it it possible to delete or to disable this function?
i have installed the widget “wp-Biographia” but if i click on “About author” the comment is displayng but the title of the site biginn with “view all post by”

where or in wich file can i disable this “view all post by..?

thank you very much
best regard
Francesco

P.s. i am very happy with your template