just leave it.. and select the clean res_mods folder when you install the updated modpack.. leaving the old stuff for now should be fine.. but if you need to.. go ahead
Everytime Wargaming releases a new patch Mod makers have to make it compatible with the new version and since there was a patch today most mods are broken and they have to fix them.. I'm guessing either tomorrow or the next day the mod installer will get updated with mods that work.
Usually you have to wait for a new version of the mod installer that will have the mods that will work with the new version.. No need to reinstall the game. Just a fresh install of the mods when the installer is updated.
Mods that do not show up in the mod installer after a patch is released will take some time to be updated. The ones that are there now were most likely mods that needed little to no changes.
You may want to download the newer version of the mod pack.. unless I missed it.. the 2 mods you are talking about are not in the updated mod pack yet until the mod makers update it.