Cosmetic: gsm48_cc_tx_setup: remove TODO comment

Remove the comment as trans->bearer_cap will be used in CSD code to
differentiate between speech and data.

Related: OS#4394
Change-Id: I0539632f464bc44945599bec52dc2a4df2f0115f
diff --git a/src/libmsc/gsm_04_08_cc.c b/src/libmsc/gsm_04_08_cc.c
index 9670db0..773ee3d 100644
--- a/src/libmsc/gsm_04_08_cc.c
+++ b/src/libmsc/gsm_04_08_cc.c
@@ -840,8 +840,6 @@
 		return rc;
 	}
 	/* Create a copy of the bearer capability in the transaction struct, so we can use this information later */
-	/* TODO: we should be able to drop trans->bearer_cap, replaced by the codecs filter. Verify this.
-	 * So far let's just store it there like previous code did. */
 	trans->bearer_cap = bearer_cap;
 	/* If no resulting codecs remain, error out. We cannot find a codec that matches both call legs. If the MGW were
 	 * able to transcode, we could use non-identical codecs on each conn of the MGW endpoint, but we are aiming for