win-capture: Do not blacklist league lobby window

The league lobby window can apparently be captured by game capture, and
may actually be useful to capture for some people.

plugins/win-capture/game-capture.c

@@ -833,7 +833,6 @@ static const char *blacklisted_exes[] = {
 	"devenv",
 	"taskmgr",
 	"systemsettings",
-	"lolclient",
 	"cmd",
 	NULL
 };