detect/mpm: remove usused cleanup function

src/detect-engine-mpm.c

@@ -655,12 +655,6 @@ uint16_t PatternMatchDefaultMatcher(void)
     return mpm_algo_val;
 }
 
-/** \brief cleans up the mpm instance after a match */
-void PacketPatternCleanup(DetectEngineThreadCtx *det_ctx)
-{
-    PmqReset(&det_ctx->pmq);
-}
-
 void PatternMatchDestroy(MpmCtx *mpm_ctx, uint16_t mpm_matcher)
 {
     SCLogDebug("mpm_ctx %p, mpm_matcher %"PRIu16"", mpm_ctx, mpm_matcher);

src/detect-engine-mpm.h

@@ -44,8 +44,6 @@ uint32_t PatternStrength(uint8_t *, uint16_t);
 uint16_t PatternMatchDefaultMatcher(void);
 uint32_t DnsQueryPatternSearch(DetectEngineThreadCtx *det_ctx, uint8_t *buffer, uint32_t buffer_len, uint8_t flags);
 
-void PacketPatternCleanup(DetectEngineThreadCtx *);
-
 void PatternMatchPrepare(MpmCtx *, uint16_t);
 void PatternMatchThreadPrepare(MpmThreadCtx *, uint16_t type);