A SIMPLE WAY TO PRODUCE A SIMPLE EMULATOR SKIN
Emulator skins contain two background images -
background_land.png and
background_port.png - and you can edit these in your image editor to exclude the right hand panel.
Note the new size of each then edit the
layout file (in the same skins folder) to reflect the new values. The lines you need to adjust are near the bottom of the file and are in the layouts>portrait and layouts>landscape sections. For the WVGA854 skin the new values will be something like this:
layouts {
portrait {
width 537
height 908
......
landscape {
width 907
height 535
......
That gives you a very plain skin but you can freely embellish it by making your own simple edits.