Deleted unnecessary stuff from Multiplexer.

Multiplexer/GetPrefix.go

 package multiplexer
 
-var (
-	BotPrefix string        // BotPrefix is bot's prefix to cut prefix's length
-	config    *configStruct // config structure
-)
-
-type configStruct struct {
-	BotPrefix string `json:"BotPrefix"`
-}
+import "git.randomchars.net/Reviath/RemiliaScarlet/config"
 
 // GetPrefix returns to Bot's prefix from config package
 func GetPrefix() string {