Remove rgblib.

I have never used it and it's probably been broken for years.

src/link/main.c

@@ -37,7 +37,7 @@ usage(void)
 {
 	printf("RGBLink v" LINK_VERSION " (part of ASMotor " ASMOTOR_VERSION
 	    ")\n\n");
-	printf("usage: rgblink [-t] [-l library] [-m mapfile] [-n symfile] [-o outfile]\n");
+	printf("usage: rgblink [-t] [-m mapfile] [-n symfile] [-o outfile]\n");
 	printf("\t    [-s symbol] [-z pad_value] objectfile [...]\n");
 
 	exit(1);
@@ -59,9 +59,6 @@ main(int argc, char *argv[])
 
 	while ((ch = getopt(argc, argv, "l:m:n:o:p:s:t")) != -1) {
 		switch (ch) {
-		case 'l':
-			lib_Readfile(optarg);
-			break;
 		case 'm':
 			SetMapfileName(optarg);
 			break;

src/link/object.c

@@ -494,26 +494,3 @@ lib_ReadXLB0(FILE * f)
 		obj_ReadOpenFile(f, name);
 	}
 }
-
-void 
-lib_Readfile(char *tzLibfile)
-{
-	FILE *pObjfile;
-
-	oReadLib = 1;
-
-	pObjfile = fopen(tzLibfile, "rb");
-	if (pObjfile == NULL) {
-		err(1, "Unable to open object '%s'", tzLibfile);
-	}
-	char tzHeader[5];
-
-	fread(tzHeader, sizeof(char), 4, pObjfile);
-	tzHeader[4] = 0;
-	if (strcmp(tzHeader, "XLB0") == 0)
-		lib_ReadXLB0(pObjfile);
-	else {
-		errx(1, "'%s' is an invalid library", tzLibfile);
-	}
-	fclose(pObjfile);
-}

src/link/rgblink.1

@@ -29,12 +29,6 @@ option to override this.
 .Pp
 The arguments are as follows:
 .Bl -tag -width Ds
-.It Fl l Ar library
-Include a referenced library module created with
-.Xr rgblib 1 .
-Note that specified libraries will be included only if needed\(emthat is, if
-a SECTION from a library is referenced by an object file.
-Only the relevant SECTION will be included, rather than the entire module.
 .It Fl m Ar mapfile
 Write a mapfile to the given filename.
 .It Fl n Ar symfile
@@ -70,7 +64,6 @@ to fix these so that the program will actually run in a Game Boy:
 .Xr rgbds 7 ,
 .Xr rgbasm 1 ,
 .Xr rgbfix 1 ,
-.Xr rgblib 1 ,
 .Xr gbz80 7
 .Sh HISTORY
 .Nm