calcRecord: drop unhandled special(SPC_MOD) from INPM..INPU

INPM..INPU each declared special(SPC_MOD), but calcRecord's special()
only implements SPC_CALC and returns S_db_badChoice for anything else.
Every dbPutField/caput to one of those nine link fields therefore ran
special(after=TRUE), hit the fall-through, and failed with
S_db_badChoice ("bad special value") -- nine documented input links
were unwritable at run time.

The twelve sibling links INPA..INPL carry no special and accept writes,
and calcRecord (unlike calcoutRecord) does no run-time link
re-initialization, so there is no handler for SPC_MOD to reach. Remove
the erroneous attribute from the nine fields so they match INPA..INPL;
special() then runs only for CALC, which is the only field that still
carries a special.

modules/database/src/std/rec/calcRecord.dbd.pod

@@ -636,55 +636,46 @@ manner for the VAL field.
 	}
 	field(INPM,DBF_INLINK) {
 		prompt("Input M")
-		special(SPC_MOD)
 		promptgroup("43 - Input M-R")
 		interest(1)
 	}
 	field(INPN,DBF_INLINK) {
 		prompt("Input N")
-		special(SPC_MOD)
 		promptgroup("43 - Input M-R")
 		interest(1)
 	}
 	field(INPO,DBF_INLINK) {
 		prompt("Input O")
-		special(SPC_MOD)
 		promptgroup("43 - Input M-R")
 		interest(1)
 	}
 	field(INPP,DBF_INLINK) {
 		prompt("Input P")
-		special(SPC_MOD)
 		promptgroup("43 - Input M-R")
 		interest(1)
 	}
 	field(INPQ,DBF_INLINK) {
 		prompt("Input Q")
-		special(SPC_MOD)
 		promptgroup("43 - Input M-R")
 		interest(1)
 	}
 	field(INPR,DBF_INLINK) {
 		prompt("Input R")
-		special(SPC_MOD)
 		promptgroup("43 - Input M-R")
 		interest(1)
 	}
 	field(INPS,DBF_INLINK) {
 		prompt("Input S")
-		special(SPC_MOD)
 		promptgroup("44 - Input S-U")
 		interest(1)
 	}
 	field(INPT,DBF_INLINK) {
 		prompt("Input T")
-		special(SPC_MOD)
 		promptgroup("44 - Input S-U")
 		interest(1)
 	}
 	field(INPU,DBF_INLINK) {
 		prompt("Input U")
-		special(SPC_MOD)
 		promptgroup("44 - Input S-U")
 		interest(1)
 	}