Revert "outpost/proxy: set samesite none"

This reverts commit f7afb60c1f.

internal/outpost/proxyv2/application/session.go

@@ -2,7 +2,6 @@ package application
 
 import (
 	"fmt"
-	"net/http"
 	"strconv"
 
 	"github.com/gorilla/sessions"
@@ -19,12 +18,10 @@ func GetStore(p api.ProxyOutpostConfig) sessions.Store {
 			panic(err)
 		}
 		rs.Options.Domain = *p.CookieDomain
-		rs.Options.SameSite = http.SameSiteNoneMode
 		store = rs
 	} else {
 		cs := sessions.NewCookieStore([]byte(*p.CookieSecret))
 		cs.Options.Domain = *p.CookieDomain
-		cs.Options.SameSite = http.SameSiteNoneMode
 		store = cs
 	}
 	return store