info/fire info/torpedo: Purge references to option MULTIFIRE

MULTIFIRE became non-optional in Chainsaw 3, more than two decades
ago.

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>

info/fire.t

@@ -2,11 +2,6 @@
 .NA fire "Fire artillery from sector/ship/unit on sector/ship"
 .LV Basic
 .SY "fire [sect | ship | land] [<ASECT> | <ASHIP> | <AUNIT>] [<VSECT> | <VSHIP>]
-When the multi-fire option is enabled, the syntax of the fire command
-changes. It is still used to shoot up land sectors or ships. However,
-you may now use multiple ships, units, sectors to fire from. Return
-fire is spread amongst all the firing things.
-.s1
 The general form for shooting at land from a sector is:
 .EX fire sect <ASECTS> <VSECT>
 Where <VSECT> is the victim sector,
@@ -145,9 +140,6 @@ will also fire on you.
 All return fire is split evenly over all attacking sectors/units/ships, and is
 adjust by the ratio of defending things to attacking things.
 .s1
-As a change from the original fire command, with multi-fire enabled,
-you will not return fire on yourself.
-.s1
 IMPORTANT NOTE: Gun ranges, both on offense AND defense, are somewhat random.
 If you have a range of 4.16, you can always shoot to 4, and have a 16% chance
 of being able to fire at range 5...

info/torpedo.t

@@ -9,8 +9,6 @@ The <target-SHIP> argument is the victim ship number and
 the <submarine-SHIPS> argument is the number(s) of your submarine or other
 ship(s) with torpedo ability.
 The program will ask for these if not provided on the command line.
-If using the multi-fire option, the program will prompt for targets for
-EACH firing torpedo ship, if no target was given on the command line.
 .s1
 Your <submarine-SHIPS> must meet the following criteria:
 .nf