chore: remove link to a closed roadmap (#354)

Co-authored-by: Luís Soares <[email protected]>

Author: lsoares

src/components/Header.js

@@ -166,12 +166,6 @@ function Header({
             </MenuButton>
 
             <MenuList>
-              <MenuLink
-                href="https://github.com/testing-library/testing-playground/projects/1"
-                target="_blank"
-              >
-                Roadmap
-              </MenuLink>
               <MenuLink
                 href="https://github.com/testing-library/testing-playground/issues"
                 target="_blank"