wcc: delete unused warning counters and ww err twin

cmd/wcc/err.c

@@ -1,13 +1,11 @@
 /*
- * Plan 9 style: short, no levels beyond fatal/error/warn, no colour.
+ * Plan 9 style: short, no levels beyond fatal/error, no colour.
  */
 #include "ww.h"
 #include <stdlib.h>
 #include <string.h>
 
 Pos	noPos = { "<none>", 0, 0 };
-int	nerrors;
-int	nwarnings;
 FILE	*errout;	/* set by main; defaults to stderr */
 
 static FILE *
@@ -52,19 +50,4 @@ errorf(Pos p, const char *fmt, ...)
 	vfprintf(f, fmt, ap);
 	va_end(ap);
 	fprintf(f, "\n");
-	nerrors++;
-}
-
-void
-warnf(Pos p, const char *fmt, ...)
-{
-	FILE *f = out();
-	va_list ap;
-	prefix(p);
-	fprintf(f, "warning: ");
-	va_start(ap, fmt);
-	vfprintf(f, fmt, ap);
-	va_end(ap);
-	fprintf(f, "\n");
-	nwarnings++;
 }

cmd/wcc/parse.c

@@ -210,9 +210,8 @@ parsetype(Parser *p)
 		if (p->cur.kind == TK_AT) {
 			advance(p);
 			const char *an = expectident(p);
-			/* p->errs gates the build (cmd/w6c/main.c:82);
-			 * nerrors is advisory-only, so an errorf on a
-			 * clean-recovery path must bump p->errs itself. */
+			/* errorf only reports; p->errs gates the build
+			 * (cmd/w6c/main.c:82). */
 			if (strcmp(an, "packed") != 0) {
 				errorf(p->cur.pos,
 				    "unknown struct attribute '@%s'", an);

cmd/wcc/ww.h

@@ -58,13 +58,10 @@ struct Pos {
 };
 
 extern Pos	noPos;
-extern int	nerrors;
-extern int	nwarnings;
 extern FILE	*errout;
 
 void	fatal(const char*, ...) __attribute__((noreturn, format(printf, 1, 2)));
 void	errorf(Pos, const char*, ...) __attribute__((format(printf, 2, 3)));
-void	warnf(Pos, const char*, ...) __attribute__((format(printf, 2, 3)));
 
 #define nelem(a)	((sizeof(a) / sizeof((a)[0])))