Doesn't it say (time) will be no more in the book of Revelation?
Actually, it doesn't. The KJV English is not good in Rev 10:6, the NKJV puts it much better...
Rev 10:6 and swore by Him who lives forever and ever, who created heaven and the things that are in it, the earth and the things that are in it, and the sea and the things that are in it,
that there should be delay no longer,
There is another verse a lot of people stumble on...
Rev 1:1 The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified it by his angel unto his servant John:
People have asked how 2000 years could equate to "shortly come to pass"? Truth is that it doesn't. This is not what this verse says. The word for shortly here is...
G5034
τάχος
tachos
takh'-os
From the same as G5036; a brief space (of time), that is, (with G1722 prefixed) in haste: - + quickly, + shortly, + speedily.
Rev 1:1 would better be rendered...
Rev 1:1 The Revelation of Jesus Christ, which God gave Him to show His servants—things which once they begin, must take place quickly. And He sent and signified it by His angel to His servant John,
John Gill beats around the bush but does say this...
to show unto his servant things which must shortly come to pass: the Arabic version adds, "in future ages"; things that were to be hereafter, the accomplishment of which was necessary, because of the certain and unalterable decree of God, the good of his people, and his own glory; and these were to come to pass quickly, in a very little time; not that they would all be fulfilled in a short space of time, for there are some things not fulfilled yet, though it is nineteen hundred years ago and more, since this revelation was made; and we are sure there are some things that will not be accomplished till a thousand years hence, and more, for the millennium is not yet begun; and after that is ended, there is to be a second resurrection, and a destruction of the Gog and Magog army;
but the sense is, that these things should very quickly begin to be fulfilled, and from thenceforward go on fulfilling till all were accomplished. Now to show, to represent these things, in a clear manner, as the nature of them would admit of, to the servants of Christ, all true believers, read and hear and diligently observe them, and especially to the ministers of the Gospel, whose business is to search into them, and point them out to and particularly to his servant John, was this revelation made by Christ, who immediately answered this end: