Revert weapon conversion

This patch reverts first step of global weapon conversion
that would have halted the release of the next version for too long.

sources/Weapons/BaseWeaponClasses/Heavy/NiceHeavyFire.uc

@@ -0,0 +1,6 @@
+class NiceHeavyFire extends NiceFire;
+
+defaultproperties
+{
+     maxBonusContLenght=3
+}

sources/Weapons/BaseWeaponClasses/Heavy/NiceHeavyGun.uc

@@ -0,0 +1,5 @@
+class NiceHeavyGun extends NiceWeapon;
+
+defaultproperties
+{
+}