remove feeds from sidebar(have 2 H1 Tag)

Question

hell

i have 2 H1 tag in my pages.

first one created by myself(is site title above all pages) and second one created by feeds section in sidebar.

i don't need feed section in sidebar

i'm using rtl flatbox theme.i search everywhere to remove second section completely but i can't find that:(

please help me to remove that section(and those H1 tags)

thank you

my site main page(it's for example.feed section is in several pages)