FIX: Remove up/down key bindings for search results

Up/down key bindings make it difficult to access Show More on search results.
https://meta.discourse.org/t/keyboard-users-cant-select-show-more-in-search-results/19394
FIX: Remove up/down key bindings for search results

Up/down key bindings make it difficult to access Show More on search results.
https://meta.discourse.org/t/keyboard-users-cant-select-show-more-in-search-results/19394