avcodec/ac3dsp: Remove unused parameter

Forgotten in fd98594a8831ce037a495b6d7e090bd8f81e83a1.

Signed-off-by: Andreas Rheinhardt <[email protected]>
diff --git a/libavcodec/ac3dsp.c b/libavcodec/ac3dsp.c
index afd6b55..22cb5f2 100644
--- a/libavcodec/ac3dsp.c
+++ b/libavcodec/ac3dsp.c
@@ -374,7 +374,7 @@
         ac3_downmix_c(samples, matrix, out_ch, in_ch, len);
 }
 
-av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
+av_cold void ff_ac3dsp_init(AC3DSPContext *c)
 {
     c->ac3_exponent_min = ac3_exponent_min_c;
     c->float_to_fixed24 = float_to_fixed24_c;
@@ -390,10 +390,10 @@
     c->downmix_fixed         = NULL;
 
 #if ARCH_ARM
-    ff_ac3dsp_init_arm(c, bit_exact);
+    ff_ac3dsp_init_arm(c);
 #elif ARCH_X86
-    ff_ac3dsp_init_x86(c, bit_exact);
+    ff_ac3dsp_init_x86(c);
 #elif ARCH_MIPS
-    ff_ac3dsp_init_mips(c, bit_exact);
+    ff_ac3dsp_init_mips(c);
 #endif
 }