Remove unnecessary exit(1) in usage()

Signed-off-by: Christoph Lohmann <20h@r-36.net>

chmod.c

@@ -17,7 +17,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-r] mode [file...]\n", argv0);
-	exit(1);
 }
 
 int

chown.c

@@ -18,7 +18,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-r] [owner][:[group]] file...\n", argv0);
-	exit(1);
 }
 
 int

cmp.c

@@ -11,7 +11,6 @@ static void
 usage(void)
 {
 	enprintf(Error, "usage: %s [-ls] file1 file2\n", argv0);
-	exit(1);
 }
 
 int

date.c

@@ -9,7 +9,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-u] [-d format] [+FORMAT]\n", argv0);
-	exit(1);
 }
 
 int

dirname.c

@@ -9,7 +9,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s string\n", argv0);
-	exit(1);
 }
 
 int

echo.c

@@ -9,7 +9,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-n] text\n", argv0);
-	exit(1);
 }
 
 int

fold.c

@@ -17,7 +17,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-bs] [-w width] [FILE...]\n", argv0);
-	exit(1);
 }
 
 int

head.c

@@ -11,7 +11,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-n] [FILE...]\n", argv0);
-	exit(1);
 }
 
 int

kill.c

@@ -24,7 +24,6 @@ usage(void)
 {
 	eprintf("usage: %s [-s signal] [pid...]\n"
 	        "       %s -l [signum]\n", argv0, argv0);
-	exit(1);
 }
 
 int

ln.c

@@ -15,7 +15,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-fs] target linkname\n", argv0);
-	exit(1);
 }
 
 int

ls.c

@@ -39,7 +39,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-adlt] [FILE...]\n", argv0);
-	exit(1);
 }
 
 int

mc.c

@@ -18,7 +18,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-c chars] [FILE...]\n", argv0);
-	exit(1);
 }
 
 int

mkdir.c

@@ -14,7 +14,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-p] directory...\n", argv0);
-	exit(1);
 }
 
 int

mkfifo.c

@@ -9,7 +9,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s name...\n", argv0);
-	exit(1);
 }
 
 int

mv.c

@@ -13,7 +13,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s source... dest\n", argv0);
-	exit(1);
 }
 
 int

nl.c

@@ -19,7 +19,6 @@ usage(void)
 {
 	eprintf("usage: %s [-b style] [-i increment] [-s sep] [FILE...]\n",
 			argv0);
-	exit(1);
 }
 
 int

nohup.c

@@ -13,7 +13,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s command [argument...]\n", argv0);
-	exit(1);
 }
 
 int

paste.c

@@ -23,7 +23,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-s] [-d list] file...\n", argv0);
-	exit(1);
 }
 
 int

pwd.c

@@ -11,7 +11,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-LP]\n", argv0);
-	exit(1);
 }
 
 int

readlink.c

@@ -12,7 +12,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-fn] file\n", argv0);
-	exit(1);
 }
 
 int

rm.c

@@ -11,7 +11,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-fr] FILE...\n", argv0);
-	exit(1);
 }
 
 int

seq.c

@@ -16,7 +16,6 @@ usage(void)
 {
 	eprintf("usage: %s [-f format] [-s sep] [-w width] first"
 		       " [inc [last]]\n", argv0);
-	exit(1);
 }
 
 int

sleep.c

@@ -7,7 +7,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s seconds\n", argv0);
-	exit(1);
 }
 
 int

sort.c

@@ -18,7 +18,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-ru] [file...]\n", argv0);
-	exit(1);
 }
 
 int

tail.c

@@ -13,7 +13,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-n lines] [file]\n", argv0);
-	exit(1);
 }
 
 int

tee.c

@@ -9,7 +9,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-a] [file...]\n", argv0);
-	exit(1);
 }
 
 int

touch.c

@@ -18,7 +18,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-c] [-t stamp] file...\n", argv0);
-	exit(1);
 }
 
 int

uname.c

@@ -10,7 +10,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-amnrsv]\n", argv0);
-	exit(1);
 }
 
 int

uniq.c

@@ -23,7 +23,6 @@ static void
 usage(void)
 {
 	eprintf("usage: %s [-cdu] [input]]\n", argv0);
-	exit(1);
 }
 
 int