PLT-5900 Removed automatic configuration of SiteURL (#5952)

* Revert "PLT-5765 Passed SiteURL to SendNotifications (#5705)"

This reverts commit a8e68bd890.

* Removed automatic configuration of SiteURL

* Reverted unintentional config changes

* Updated help text

* Added link to docs in Site URL warning

* Fixed merge conflict

app/team_test.go

@@ -8,7 +8,6 @@ import (
 	"testing"
 
 	"github.com/mattermost/platform/model"
-	"github.com/mattermost/platform/utils"
 )
 
 func TestCreateTeam(t *testing.T) {
@@ -43,12 +42,12 @@ func TestCreateTeamWithUser(t *testing.T) {
 		Type:        model.TEAM_OPEN,
 	}
 
-	if _, err := CreateTeamWithUser(team, th.BasicUser.Id, utils.GetSiteURL()); err != nil {
+	if _, err := CreateTeamWithUser(team, th.BasicUser.Id); err != nil {
 		t.Log(err)
 		t.Fatal("Should create a new team with existing user")
 	}
 
-	if _, err := CreateTeamWithUser(team, model.NewId(), utils.GetSiteURL()); err == nil {
+	if _, err := CreateTeamWithUser(team, model.NewId()); err == nil {
 		t.Fatal("Should not create a new team - user does not exist")
 	}
 
@@ -64,7 +63,7 @@ func TestCreateTeamWithUser(t *testing.T) {
 	}
 
 	//Fail to create a team with user when user has set email without domain
-	if _, err := CreateTeamWithUser(team2, ruser.Id, utils.GetSiteURL()); err == nil {
+	if _, err := CreateTeamWithUser(team2, ruser.Id); err == nil {
 		t.Log(err.Message)
 		t.Fatal("Should not create a team with user when user has set email without domain")
 	} else {
@@ -96,7 +95,7 @@ func TestAddUserToTeam(t *testing.T) {
 	user := model.User{Email: strings.ToLower(model.NewId()) + "success+test@example.com", Nickname: "Darth Vader", Username: "vader" + model.NewId(), Password: "passwd1", AuthService: ""}
 	ruser, _ := CreateUser(&user)
 
-	if _, err := AddUserToTeam(th.BasicTeam.Id, ruser.Id, utils.GetSiteURL()); err != nil {
+	if _, err := AddUserToTeam(th.BasicTeam.Id, ruser.Id); err != nil {
 		t.Log(err)
 		t.Fatal("Should add user to the team")
 	}
@@ -108,7 +107,7 @@ func TestAddUserToTeamByTeamId(t *testing.T) {
 	user := model.User{Email: strings.ToLower(model.NewId()) + "success+test@example.com", Nickname: "Darth Vader", Username: "vader" + model.NewId(), Password: "passwd1", AuthService: ""}
 	ruser, _ := CreateUser(&user)
 
-	if err := AddUserToTeamByTeamId(th.BasicTeam.Id, ruser, utils.GetSiteURL()); err != nil {
+	if err := AddUserToTeamByTeamId(th.BasicTeam.Id, ruser); err != nil {
 		t.Log(err)
 		t.Fatal("Should add user to the team")
 	}