coding: gsm0503_tch_f96_[de]interleave() not applicable to TCH/F2.4

According to 3GPP TS 45.003, section 3.6.4, the interleaving for
TCH/F2.4 is done as specified for the TCH/FS in subclause 3.1.3.

Change-Id: I52078263cd593503a9e8f024e51e18d7b0906131
Related: OS#1572
diff --git a/src/coding/gsm0503_interleaving.c b/src/coding/gsm0503_interleaving.c
index cd2f235..570d65a 100644
--- a/src/coding/gsm0503_interleaving.c
+++ b/src/coding/gsm0503_interleaving.c
@@ -700,7 +700,7 @@
  * of coded data starts with every fourth burst and is distributed over
  * 22 bursts.
  *
- * Also used for TCH/F4.8, TCH/H4.8, TCH/F2.4 and TCH/H2.4 and TCH/F14.4 */
+ * Also used for TCH/F4.8, TCH/H4.8, and TCH/H2.4 and TCH/F14.4 */
 void gsm0503_tch_f96_interleave(const ubit_t *cB, ubit_t *iB)
 {
 	int j, k, B;