<?xml version="1.0"?>
<root>
  <item>
    <name>Disable Command+Tab</name>
    <appendix>Change cmd+tab to F19</appendix>
    <appendix>Change cmd+shift+tab to shift+F19</appendix>
    <identifier>private.diable_command_plus_tab</identifier>
    <autogen>__KeyToKey__ KeyCode::TAB, ModifierFlag::COMMAND_L | ModifierFlag::NONE, KeyCode::F19</autogen>
    <autogen>__KeyToKey__ KeyCode::TAB, ModifierFlag::COMMAND_L | ModifierFlag::SHIFT_L | ModifierFlag::NONE, KeyCode::F19, ModifierFlag::SHIFT_L</autogen>
  </item>
</root>

Copy of my karabiner settings
Feat: Copy of my karabiner settings
