replaygain: Remove dead assignment

Patch-from: lvqcl <lvqcl.mail@gmail.com>
diff --git a/src/share/replaygain_analysis/replaygain_analysis.c b/src/share/replaygain_analysis/replaygain_analysis.c
index 9c0528b..7611cf9 100644
--- a/src/share/replaygain_analysis/replaygain_analysis.c
+++ b/src/share/replaygain_analysis/replaygain_analysis.c
@@ -359,7 +359,6 @@
     if ( ! replaygainfilter)
         return INIT_GAIN_ANALYSIS_ERROR;
 
-    sampleWindow = (int) ceil ((double)samplefreq * (double)RMS_WINDOW_TIME / 1000.0);
     sampleWindow =
         (replaygainfilter->rate * RMS_WINDOW_TIME + 1000-1) / 1000;