I did not read anything in there, or in Romans chapter 8; where God said animal sacrifice was no longer required. In John 10:35 Christ did say specifically that the Scriptures cannot be broken.
As for the OP; the meaning of a scapegoat. I would say that Satan is the ultimate scapegoat; someone else to blame for misdeeds and Sin, so that men do not have to take responsibility for their own. Every Christian who shouts "Satan this, or Satan that"; is not looking in the mirror to take responsibility for themselves.
If the Book of Leviticus is of the OT, and that makes up the "old covenant" which no longer applies to the "new covenant"; then that Book has no meaning in the Prophecy of the End Times given in the NT. While men may want to blame anyone and everyone else (the scapegoat); every man shall be judged!
We all hear the phrase "the devil made me do it" but it is only sin that dwells in the flesh. This is why we have to be Spiritually born again and indwelled with the Holy Spirit.
There are laws (613 commandments) of God that were especially written just for the Hebrews pertaining to the rituals of the Temple, sacrifices, festivals, Torah, Kohanim and Levites, the King and the Nazarite. Then there are the existing moral laws (commandments) for all of us to still follow under a better covenant of God's mercy and grace through the blood sacrifice of Christ Jesus as we still keep the moral laws as in prayers and blessings, love and brotherhood. The poor and unfortunate, treatment of the Gentiles, Marriage, divorce and family. Forbidden sexual relations, business practices, employees and servants. Vows, oaths, swearing, Court and Judicial procedures. Injuries and damages, property and property rights, criminal laws. Prophecy, idolatry and all its practices as the moral laws (commandments) keep us in line with the will of God.
Mat 5:17 Think not that I am come to destroy the law, or the prophets:
I am not come to destroy, but to fulfil.
Mat 5:18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Mat 5:19 Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
Mat 5:20 For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven.
Heb 10:1
For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
Heb 10:2 For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.
Heb 10:3 But in those sacrifices there is a remembrance again made of sins every year.
Heb 10:4
For it is not possible that the blood of bulls and of goats should take away sins.
Heb 10:5 Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
Heb 10:6 In burnt offerings and sacrifices for sin thou hast had no pleasure.
Heb 10:7 Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.
Heb 10:8 Above when he said, Sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered
by the law;
Heb 10:9 Then said he, Lo, I come to do thy will, O God.
He taketh away the first, that he may establish the second.
Heb 10:10
By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
Heb 10:11
And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
Heb 10:12
But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;
Heb 10:13 From henceforth expecting till his enemies be made his footstool.
Heb 10:14 For by one offering he hath perfected for ever them that are sanctified.
Heb 10:15 Whereof the Holy Ghost also is a witness to us: for after that he had said before,
Heb 10:16
This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them;
Heb 10:17
And their sins and iniquities will I remember no more.
Heb 10:18
Now where remission of these is, there is no more offering for sin. 
