InoReader_kill_shortcuts.user.js

// ==UserScript==
// @name        InoReader Kill Keyboard Shortcuts
// @namespace   https://gist.github.com/myuhe/42a59ac8ae070b85bd8b
// @include     http*://www.inoreader.com/*
// @include     http*://inoreader.com/*
// @include     http*://beta.inoreader.com/*
// @run-at      document-start
// @version     1.0
// @require     https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js
// @grant       none
// ==/UserScript==

document.addEventListener('keydown', function(e) {
    if (!e.shiftKey){
        if(e.keyCode == 84 || e.keyCode == 65) { // T
             e.stopImmediatePropagation();
            return false;
        }
    }
    }, true);