remove unused imports and clean up go.mod dependencies

Author: Armin

go.mod

@@ -8,28 +8,18 @@ require (
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/joho/godotenv v1.5.1
 	github.com/labstack/echo/v4 v4.14.0
-	github.com/prometheus/client_golang v1.23.2
 	github.com/rabbitmq/amqp091-go v1.10.0
 )
 
 require (
 	filippo.io/edwards25519 v1.1.0 // indirect
-	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/kr/text v0.2.0 // indirect
 	github.com/labstack/gommon v0.4.2 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.66.1 // indirect
-	github.com/prometheus/procfs v0.16.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
-	go.yaml.in/yaml/v2 v2.4.2 // indirect
 	golang.org/x/crypto v0.46.0 // indirect
 	golang.org/x/net v0.48.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 	golang.org/x/text v0.32.0 // indirect
-	google.golang.org/protobuf v1.36.8 // indirect
 )

internal/operator/operatorA/service.go

@@ -2,7 +2,7 @@ package operatorA
 
 import (
 	"context"
-	"errors"
+
 	"sms-gateway/app"
 	"sms-gateway/internal/model"
 )