Cosmetic: gsm48_cc_tx_setup: tweak comment

Remove the misleading "We must not pass bearer_cap to
codec_filter_init()" part of the comment. The function doesn't accept a
bearer_cap parameter, it cannot be passed to the function:

  void codec_filter_init(struct codec_filter *codec_filter)
  {
  	*codec_filter = (struct codec_filter){};
  }

Related: OS#4394
Change-Id: I87a1e371e108d8da514b30f1726aad0f85ea4111
---
M src/libmsc/gsm_04_08_cc.c
1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/libmsc/gsm_04_08_cc.c b/src/libmsc/gsm_04_08_cc.c
index 9d429a0..9670db0 100644
--- a/src/libmsc/gsm_04_08_cc.c
+++ b/src/libmsc/gsm_04_08_cc.c
@@ -802,9 +802,8 @@
 	/* MT call leg is starting. Gather all codecs information so far known.
 	 * (Usually) paging has succeeded, and now we're processing the MNCC Setup from the remote MO call leg.
 	 * Initialize the codecs filter with this side's BSS' codec list, received at Complete Layer 3.
-	 * We must not pass bearer_cap to codec_filter_init(), because we haven't received the MT MS's Bearer
-	 * Capabilities yet; the Bearer Capabilities handled here are actually the remote call leg's Bearer
-	 * Capabilities. */
+	 * We haven't received the MT MS's Bearer Capabilities yet; the Bearer Capabilities handled here are
+	 * actually the remote call leg's Bearer Capabilities. */
 	codec_filter_init(&trans->cc.codecs);
 	codec_filter_set_ran(&trans->cc.codecs, trans->msc_a->c.ran->type);
 	codec_filter_set_bss(&trans->cc.codecs, &trans->msc_a->cc.compl_l3_codec_list_bss_supported);

