media: dib7000p: Remove dead code

Clang warns that 'interleaving' is assigned to itself in this function.

drivers/media/dvb-frontends/dib7000p.c:1874:15: warning: explicitly
assigning value of variable of type 'int' to itself [-Wself-assign]
        interleaving = interleaving;
        ~~~~~~~~~~~~ ^ ~~~~~~~~~~~~
1 warning generated.

Just remove the self-assign and leave existing code in place for now.
Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/dvb-frontends/dib7000p.c

@@ -1871,10 +1871,13 @@ static u32 dib7000p_get_time_us(struct dvb_frontend *demod)
 		break;
 	}
 
-	interleaving = interleaving;
-
 	denom = bits_per_symbol * rate_num * fft_div * 384;
 
+	/*
+	 * FIXME: check if the math makes sense. If so, fill the
+	 * interleaving var.
+	 */
+
 	/* If calculus gets wrong, wait for 1s for the next stats */
 	if (!denom)
 		return 0;