utils: Fix a bad double osmo_ prefix for osmo_hexdump_nospc

Hopefully no project where using them it seems

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/include/osmocom/core/utils.h b/include/osmocom/core/utils.h
index 940c25f..315757c 100644
--- a/include/osmocom/core/utils.h
+++ b/include/osmocom/core/utils.h
@@ -34,7 +34,7 @@
 
 char *osmo_ubit_dump(const uint8_t *bits, unsigned int len);
 char *osmo_hexdump(const unsigned char *buf, int len);
-char *osmo_osmo_hexdump_nospc(const unsigned char *buf, int len);
+char *osmo_hexdump_nospc(const unsigned char *buf, int len);
 
 #define osmo_static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1];