In the world doping are illegal because it in the long run ruins peoples bodies, destroy their lives and is considered cheating. Doping is a form of "Pharmakeia" and that is forbidden in the Bible too.
If you want to cure a villager zombie you can do this by first giving him/her a potion of weakness and then a ordinary golden apple. After a couple of minutes the villager is cured from its zombie state. This is an exception from the rule that enchantments is forbidden.
How to un-enchant objects
"Item Repair is a feature that allows players to repair damaged tools, armor, or other items with durability by combining them on a crafting grid. Two items of the same type and material can be placed anywhere on the crafting grid, and the result is a single repaired item. The repaired item will have usage points equal to the sum of the old items' usage points plus a 'repair bonus' of 5% (10% before 1.4) of the item's maximum uses, up to a limit of the maximum durability for that item.
|Item repair and un-enchantement.|
Even if both items were enchanted with exactly the same enchantments, the repaired object will always be unenchanted. Hence, given the current random enchantment system"
Sacrifice your enchanted objects
At Spawn (to go there do /spawn) you can find a Stone altar with lava where you can burn your enchanted objects. Sometimes such objects will appear without the players consent for example during a fight and the mob are dropping objects.
Below is a text from Wikipedia about sorcery:
Pharmakeia and the BiblePharmakeia and its related word forms appear four times in the Book of Revelation as follows:
Revelation 9:21 Neither repented they of their murders, nor of their sorceries (Pharmakeia), nor of their fornication, nor of their thefts.The Epistle to the Galatians lists pharmakeia or pharmacy as works of the flesh for which those doing such things will not inherit the Kingdom of God.
Revelation 18:23 And the light of a candle shall shine no more at all in thee; and the voice of the bridegroom and of the bride shall be heard no more at all in thee: for thy merchants were the great men of the earth; for by thy sorceries (Pharmakeia) were all nations deceived.
Revelation 21:8 But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers (pharmakon), and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.
Revelation 22:15 For without are dogs, and sorcerers (pharmakeus), and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie.
Galatians 5:19 Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness, 20 Idolatry, witchcraft (pharmakeia), hatred, variance, emulations, wrath, strife, seditions, heresies, 21 Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God. 22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, 23 Meekness, temperance: against such there is no law.In the masoretic text in the portion of the Old Testament called the Torah, practitioners of kashaph - incanting maleficium is translated into the Greek Septuagint version of the same passages as pharmakeia. Historically this passage has been translated into English using vague terminology such as witchcraft.