trim out some external libraries after sessions rewritten

go.mod

@@ -10,11 +10,9 @@ require (
 	github.com/derekparker/trie v0.0.0-20230829180723-39f4de51ef7d
 	github.com/disintegration/imaging v1.6.2
 	github.com/go-sql-driver/mysql v1.9.3
-	github.com/gorilla/sessions v1.4.0
 	github.com/hashicorp/golang-lru v1.0.2
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/klauspost/lctime v0.1.0
-	github.com/labstack/echo-contrib v0.17.4
 	github.com/labstack/echo/v4 v4.13.4
 	github.com/labstack/gommon v0.4.2
 	github.com/sirupsen/logrus v1.9.3
@@ -27,8 +25,6 @@ require (
 	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53 // indirect
 	github.com/alexflint/go-scalar v1.2.0 // indirect
-	github.com/gorilla/context v1.1.2 // indirect
-	github.com/gorilla/securecookie v1.1.2 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect