I don't believe we're allowed to talk about EVM here.
But, just to give some kind of answer --
1.) Open X:\Program Files\Steam\SteamApps\
[email protected]\half-life\esf\liblist.gam in Notepad (or any text editor).
2.) Look for lines starting with "gamedll", you might have three or four.
3.) EVM is configured through Metamod, so find the line reading along the lines of "gamedll addons\metamod\..."
4.) Go to the beginning of this line and add "//" (if you have multiple "gamedll"s, you'll see that they have these marks -- these mark comments, and mean "documentation, ignore this line")
5.) Find the line that ends in either esf_bot.dll or hl.dll (I believe they'll both work, I use esf_bot.dll), and remove the "//" commentation marks from the beginning of that line.
6.) Ensure that you have only one uncommented (lacking the "//" marks) line beginning with gamedll (gamedll_linux is OK, if it's there as well).
7.) Save liblist.gam (ctrl+s), close, launch game.
You should be set to go, sans EVM.