Remove progname variable

The error message shouldn't specify the name of the binary, that's
supposed to be known by the caller.

Update test reference outputs.

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>

src/asm/main.c

@@ -20,8 +20,6 @@ int cldefines_index;
 int cldefines_size;
 char **cldefines;
 
-char *progname;
-
 clock_t nStartClock, nEndClock;
 SLONG nLineNo;
 ULONG nTotalLines, nPass, nPC, nIFDepth, nErrors;
@@ -301,8 +299,6 @@ main(int argc, char *argv[])
 	if (argc == 1)
 		usage();
 
-	progname = "rgbasm";
-
 	/* yydebug=1; */
 
 	DefaultOptions.gbgfx[0] = '0';