app-layer: remove IsTxEventAware: never used

The function AppLayerParserProtocolIsTxEventAware is not used so
remove.

src/app-layer-parser.c

@@ -1389,14 +1389,6 @@ int AppLayerParserIsEnabled(AppProto alproto)
     return 0;
 }
 
-int AppLayerParserProtocolIsTxEventAware(uint8_t ipproto, AppProto alproto)
-{
-    SCEnter();
-    int ipproto_map = FlowGetProtoMapping(ipproto);
-    int r = (alp_ctx.ctxs[ipproto_map][alproto].StateGetEvents == NULL) ? 0 : 1;
-    SCReturnInt(r);
-}
-
 int AppLayerParserProtocolHasLogger(uint8_t ipproto, AppProto alproto)
 {
     SCEnter();

src/app-layer-parser.h

@@ -263,7 +263,6 @@ int AppLayerParserParse(ThreadVars *tv, AppLayerParserThreadCtx *tctx, Flow *f,
                    uint8_t flags, const uint8_t *input, uint32_t input_len);
 void AppLayerParserSetEOF(AppLayerParserState *pstate);
 bool AppLayerParserHasDecoderEvents(AppLayerParserState *pstate);
-int AppLayerParserProtocolIsTxEventAware(uint8_t ipproto, AppProto alproto);
 int AppLayerParserProtocolHasLogger(uint8_t ipproto, AppProto alproto);
 LoggerId AppLayerParserProtocolGetLoggerBits(uint8_t ipproto, AppProto alproto);
 void AppLayerParserTriggerRawStreamReassembly(Flow *f, int direction);