Fixes #1241: Removed disposition-based combat conditions

The information for this code came from UESP, which in turn cites a (extremely vague) section from the TES-CS help text, so no surprise that it wasn't accurate.

The guard on the boat has a fight rating of 70, so with the old code it would attack on sight if the disposition is low enough. BTB-Character.esp includes something (not sure what) that drops his disposition to 35 when playing as a Khajiit, making him attack.

Testing in Vanilla it appears that disposition has no effect on combat engagement at all. Even with disposition 0 and fight 70 the NPCs don't attack.

Setting an NPCs fight rating to 70 or less still has a meaning, because the higher it is, the easier it becomes to raise the fight rating to 80 (by taunting, for example).

apps/openmw/mwmechanics/actors.cpp

@@ -204,11 +204,6 @@ namespace MWMechanics
                     || (fight >= 95 && d <= 3000)
                     || (fight >= 90 && d <= 2000)
                     || (fight >= 80 && d <= 1000)
-                    || (fight >= 80 && disp <= 40)
-                    || (fight >= 70 && disp <= 35 && d <= 1000)
-                    || (fight >= 60 && disp <= 30 && d <= 1000)
-                    || (fight >= 50 && disp == 0)
-                    || (fight >= 40 && disp <= 10 && d <= 500)
                     )
                 {
                     bool LOS = MWBase::Environment::get().getWorld()->getLOS(ptr,player)