Removing community menu | Community Development | Sandbox ConnAct

Yes, we do have a way for this and it's through CSS overrides.
1. For removing left community menu from all spaces you can use this code in CSS overrides:

.et-space-search .ax-space-left-col-menu{
display: none!important;
}

2. For removing left community menu from a particular space you will first need the space class, this is where you can get it:

Once you get the space class you can use this code with your space name added here:

.x-custom-space-human-resources.et-space-search .ax-space-left-col-menu{
display: none!important;
}