Remove the "x" word format; it's the same as the "Alto" format.

Author: larsbrinkhoff

Makefile

@@ -8,7 +8,7 @@ FILES =  sblk-file.o pdump-file.o dmp-file.o raw-file.o exe-file.o \
 
 WORDS =  aa-word.o alto-word.o bin-word.o cadr-word.o core-word.o \
 	 data8-word.o dta-word.o its-word.o oct-word.o pt-word.o \
-	 sail-word.o tape-word.o x-word.o
+	 sail-word.o tape-word.o
 
 OBJS =	pdp10-opc.o info.o dis.o symbols.o \
 	timing.o timing_ka10.o timing_ki10.o memory.o weenix.o

dis.h

@@ -100,7 +100,6 @@ extern struct word_format pt_word_format;
 extern struct word_format sail_word_format;
 extern struct word_format tape_word_format;
 extern struct word_format tape7_word_format;
-extern struct word_format x_word_format;
 
 extern void     usage_file_format (void);
 extern int      parse_input_file_format (const char *);

word.c

@@ -35,7 +35,6 @@ static struct word_format *word_formats[] = {
   &sail_word_format,
   &tape_word_format,
   &tape7_word_format,
-  &x_word_format,
   NULL
 };
 static word_t checksum;