src: Remove tag, timestamp, and surrounding [ ].

src/fluentbit_wendelin.go

@@ -73,9 +73,7 @@ func FLBPluginFlushCtx(ctx, data unsafe.Pointer, length C.int, tag *C.char) int
 		}
 
 		// Print record keys and values
-                result = result + C.GoString(tag) + ":" +timestamp.String()
 		for _, v := range record {
-                   result += "["
                    var output_string string = ""
                    for _, s := range v.([]uint8) {
                      output_string  = output_string + string(s)
@@ -83,7 +81,7 @@ func FLBPluginFlushCtx(ctx, data unsafe.Pointer, length C.int, tag *C.char) int
                    if strings.Contains(output_string, "fluentbit_end") {
                      is_end = true
                    }
-                   result = result + output_string + "]"
+                   result = result + output_string 
 		}
                 result += "\n"
 	}