utils: remove misleading comments for osmo_hexdump[_nospc]_c()

The buffer is allocated dynamically on heap, so there is no such
limitation of 4096 bytes / 1365 characters.

Change-Id: I960dd6a53123fd4209ef6e61dcd0d22e4005e397
diff --git a/src/utils.c b/src/utils.c
index 2b21dcc..c180595 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -407,9 +407,6 @@
  *
  * This function will print a sequence of bytes as hexadecimal numbers,
  * adding one space character between each byte (e.g. "1a ef d9")
- *
- * The maximum size of the output buffer is 4096 bytes, i.e. the maximum
- * number of input bytes that can be printed in one call is 1365!
  */
 char *osmo_hexdump_c(const void *ctx, const unsigned char *buf, int len)
 {
@@ -446,9 +443,6 @@
  *
  * This function will print a sequence of bytes as hexadecimal numbers,
  * without any space character between each byte (e.g. "1aefd9")
- *
- * The maximum size of the output buffer is 4096 bytes, i.e. the maximum
- * number of input bytes that can be printed in one call is 2048!
  */
 char *osmo_hexdump_nospc_c(const void *ctx, const unsigned char *buf, int len)
 {