Remove termcap from the build.

libtermcap was deprecated in favor of terminfo in 2013; the library was
removed then, and this file was only left because not all optional
packages had yet been rebuilt against ncurses. Well, that has now
long been completed, and indeed all applications continue to function
even after removing /etc/termcap.

In case any legacy applications that I have missed still do need it,
it should be provided by HaikuPorts and not Haiku itself.

build/jam/images/definitions/minimum

@@ -264,7 +264,6 @@ local etcDir = [ FDirName $(HAIKU_TOP) data etc ] ;
 local etcFiles = inputrc profile ;
 etcFiles = $(etcFiles:G=etc) ;
 SEARCH on $(etcFiles) = $(etcDir) ;
-etcFiles += <etc>termcap ;
 AddFilesToHaikuImage system settings etc : $(etcFiles) ;
 
 local profileFiles = [ Glob $(etcDir)/profile.d : *.sh ] ;