This complex initial subordinate clause is never completed; thus the committee for the 1920 LDS edition deleted the subordinate conjunction as so that the original sentence fragment was eliminated. The original text of the Book of Mormon had many examples of such complex constructions “getting out of control”, so to speak, and never being completed. Over time editors have striven to remove such infelicities—in this case, by deleting the as. For a list of examples, see the discussion under 1 Nephi 8:7.
Summary: Restore in Enos 1:26 the original subordinate conjunction as; although this change restores an incomplete initial subordinate clause, such complex fragments were fairly frequent in the earliest text and appear (for the most part) to belong in the original text.