Revert "[Fuzzer] Afl driver changing iterations handling"

This reverts rL334510 due to breakage of afl_driver's command line
interface.

Patch By: Jonathan Metzman

Differential Revision: https://reviews.llvm.org/D49141

llvm-svn: 336719
GitOrigin-RevId: 0e904e8806fe18dbed895e74901cd25262a611a8
1 file changed