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diff --git a/common/mp3.c b/common/mp3.c
deleted file mode 100644
index b00a5fb..0000000
--- a/common/mp3.c
+++ /dev/null
@@ -1,29 +0,0 @@
-#include "mp3.h"
-
-int mp3_find_sync_word(const unsigned char *buf, int size)
-{
-	const unsigned char *p, *pe;
-
-	/* find byte-aligned syncword - need 12 (MPEG 1,2) or 11 (MPEG 2.5) matching bits */
-	for (p = buf, pe = buf + size - 3; p <= pe; p++)
-	{
-		int pn;
-		if (p[0] != 0xff)
-			continue;
-		pn = p[1];
-		if ((pn & 0xf8) != 0xf8 || // currently must be MPEG1
-		    (pn & 6) == 0) {       // invalid layer
-			p++; continue;
-		}
-		pn = p[2];
-		if ((pn & 0xf0) < 0x20 || (pn & 0xf0) == 0xf0 || // bitrates
-		    (pn & 0x0c) != 0) { // not 44kHz
-			continue;
-		}
-
-		return p - buf;
-	}
-
-	return -1;
-}
-