Remove the "7-bit only" node option

The way this option worked was, if enabled (and it was off by default), bit 7
of all character input *before* successful logon would be stripped and bit 7
from all character input of terminals configured as US-ASCII (only) would be
stripped after logon.

Instead, always strip bit 7 (the 8th bit) of each input character from US-ASCII
(only) terminals. Other detected/configured terminals (CP437, UTF-8, PETSCII)
won't have bit 7 stripped (ever) since that's likely not a necessary or nice
thing to do. There's now no different handling of pre/post logon in this
regard.

If there's a need to strip parity bits from character input from client
terminals that support CP437, UTF-8, or PETSCII, then we'll re-add this feature
in but it shouldn't be a per-node setting in that case.

src/sbbs3/inkey.cpp

@@ -109,9 +109,8 @@ int sbbs_t::inkey(int mode, unsigned int timeout)
 	if(ch == NOINP)
 		return no_input;
 
-	if(cfg.node_misc&NM_7BITONLY
-		&& (!(sys_status&SS_USERON) || term_supports(NO_EXASCII)))
-		ch&=0x7f;
+	if(term_supports(NO_EXASCII))
+		ch&=0x7f; // e.g. strip parity bit
 
 	getkey_last_activity = time(NULL);
 

src/sbbs3/scfg/scfgnode.c

@@ -238,8 +238,6 @@ void node_cfg()
 				done=0;
 				while(!done) {
 					i=0;
-					snprintf(opt[i++], MAX_OPLN, "%-27.27s%s","Allow 8-bit Remote Logins"
-						,cfg.node_misc&NM_7BITONLY ? "No":"Yes");
 					snprintf(opt[i++], MAX_OPLN, "%-27.27s%s","Spinning Pause Prompt"
 						,cfg.node_misc&NM_NOPAUSESPIN ? "No":"Yes");
 					snprintf(opt[i++], MAX_OPLN, "%-27.27s%s","Keep Node File Open"
@@ -260,26 +258,6 @@ void node_cfg()
 							done=1;
 							break;
 						case 0:
-							i=cfg.node_misc&NM_7BITONLY ? 0:1;
-							uifc.helpbuf=
-								"`Allow 8-bit Remote Input During Login:`\n"
-								"\n"
-								"If you wish to allow E-7-1 terminals to use this node, you must set this\n"
-								"option to `No`. This will also eliminate the ability of 8-bit remote users\n"
-								"to send IBM extended ASCII characters during the login sequence.\n"
-							;
-							i=uifc.list(WIN_MID|WIN_SAV,0,10,0,&i,0
-								,"Allow 8-bit Remote Input During Login",uifcYesNoOpts);
-							if(i==1 && !(cfg.node_misc&NM_7BITONLY)) {
-								cfg.node_misc|=NM_7BITONLY;
-								uifc.changes=1;
-							}
-							else if(i==0 && (cfg.node_misc&NM_7BITONLY)) {
-								cfg.node_misc&=~NM_7BITONLY;
-								uifc.changes=1;
-							}
-							break;
-						case 1:
 							i=cfg.node_misc&NM_NOPAUSESPIN ? 1:0;
 							uifc.helpbuf=
 								"`Spinning Pause Prompt:`\n"
@@ -298,7 +276,7 @@ void node_cfg()
 								uifc.changes=1;
 							}
 							break;
-						case 2:
+						case 1:
 							i=cfg.node_misc&NM_CLOSENODEDAB ? 1:0;
 							uifc.helpbuf=
 								"`Keep Node File Open:`\n"