Remove special doinv key

The same thing can be done in config file with BIND=0:inventory

doc/Guidebook.mn

@@ -4761,12 +4761,6 @@ With
 .op number_pad
 only.
 Default is \(oqn\(cq.
-.lp doinv
-Show inventory.
-With
-.op number_pad
-only.
-Default is \(oq0\(cq.
 .lp fight
 Prefix key to force fight a direction.
 Default is \(oqF\(cq.

doc/Guidebook.tex

@@ -5224,9 +5224,6 @@ can only be bound to a single key.
 Prefix key to start a count, to repeat a command this many times.
 With {\it number\verb+_+pad\/} only. Default is~`{\tt n}'.
 %.lp
-\item[{\bb{doinv}}]
-Show inventory. With {\it number\verb+_+pad\/} only. Default is~`{\tt 0}'.
-%.lp
 \item[{\bb{fight}}]
 Prefix key to force fight a direction. Default is~`{\tt F}'.
 %.lp

doc/fixes37.0

@@ -571,6 +571,7 @@ defer encumbrance check during polymorph to new man; newman() -> redist_attr()
 fix heap-use-after-free when attacking monster with potion
 for "a" vs "an", add ukulele and uke as exceptions for "an u<anything>"
 add new extended command #retravel
+remove special doinv key, functionality was equal to BIND=0:inventory
 
 
 Fixes to 3.7.0-x Problems that Were Exposed Via git Repository