Revert "[MM-41576] Revamp database schema version (#19586)" (#19746)

* Revert "[MM-41576] Revamp database schema version (#19586)"

This reverts commit 645fee3fe3.

* Revert "MM-42049 - license endpoint not working (#19686)"

This reverts commit 4fe89e5847.

app/server_test.go

@@ -235,7 +235,7 @@ func TestDatabaseTypeAndMattermostVersion(t *testing.T) {
 
 	databaseType, mattermostVersion := th.Server.DatabaseTypeAndMattermostVersion()
 	assert.Equal(t, "postgres", databaseType)
-	assert.GreaterOrEqual(t, mattermostVersion, strconv.Itoa(1))
+	assert.Equal(t, "5.31.0", mattermostVersion)
 
 	os.Setenv("MM_SQLSETTINGS_DRIVERNAME", "mysql")
 
@@ -244,7 +244,7 @@ func TestDatabaseTypeAndMattermostVersion(t *testing.T) {
 
 	databaseType, mattermostVersion = th2.Server.DatabaseTypeAndMattermostVersion()
 	assert.Equal(t, "mysql", databaseType)
-	assert.GreaterOrEqual(t, mattermostVersion, strconv.Itoa(1))
+	assert.Equal(t, "5.31.0", mattermostVersion)
 }
 
 func TestGenerateSupportPacket(t *testing.T) {