But not the ONLY sabbath day of rest mentioned.Therefore no one is to act as your judge in regard to food or drink or in respect to a festival or a new moon or a Sabbath day
The Weekly Sabbath is a Sabbath Day is it not?
Obviously Paul is talking about holy days, new moon sabbaths and other sabbath days associated with those same Mosaic Law celebrations. They were "dated" holidays and never fell on the same day of the week year after year.
But he does not specifically include the 7th day sabbath in this group.
The sabbath day of the 4th commandment is one of the 10 commandments.
The only way to get rid of one of God's 10 commandments is to do away with that entire law.
Do you even know what each of those 10 commandments are?