Cleanup: Some CGameRules methods are now of type 'bool'

Remove rules.qc

src/server/gamerules.qc

@@ -14,8 +14,6 @@
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-var int autocvar_sv_playerkeepalive = TRUE;
-
 bool
 HLGameRules::IsMultiplayer(void)
 {

src/server/progs.src

@@ -82,7 +82,6 @@ gamerules_ctf.qc
 ../../../valve/src/server/client.qc
 server.qc
 ../../../base/src/server/damage.qc
-../../../valve/src/server/rules.qc
 ../../../valve/src/server/flashlight.qc
 ../../../base/src/server/modelevent.qc