I just installed a ceiling fan which operates only using a remote control. The previous fan was controlled by two wall switches. The new fan remote will only work while the main wall switch in the "on" position. The second wall switch is no longer live (which is good). Question. Should / could I simply use a wire connector to keep the electricity constantly flowing to the fan and merely cover the wall box with a plate? Are there any advantages to keeping the wall switch (even though it only turn the flow on/off and does not control the fan/light)?
The alternative is merely to keep the current wall switch and leave it in the "on" position all the time (which is is a little annoying as, if someone inadvertently turns off the wall switch then the remote doesn't work).

You can remove the switches and direct wire OR you can go to Home Depot, in the switch area, and get small covers that block the switch. I would do that personally.

That means you have a 3 way switch, if you're going to remove the switches, its not as simple as tying all the wires together, you have travelers and have to make sure you have the power and the switch leg wired together. There might be one in each box, if that's the case then you have to use a traveler as a "jumper"

That means you have a 3 way switch, if you're going to remove the switches, its not as simple as tying all the wires together, you have travelers and have to make sure you have the power and the switch leg wired together. There might be one in each box, if that's the case then you have to use a traveler as a "jumper"

Doesn't necessarily mean 3 way, most newer installs for fans have 2 switches, 1 for fan and 1 for light, Every room in my home is wired with 2 switches, 14/3 with shared neutral.