cleanup rtfs a little

rtfs/lib/rtfs.lua

@@ -285,7 +285,6 @@ function proxy:relocateFile(n,dest,loud)
 end
 
 function proxy:defragment(loud)
- loud=true
  while self.runningDefragment do
   coroutine.yield()
  end
@@ -418,7 +417,6 @@ function rtfs.mount(d)
  local p = setmetatable({}, {__index=proxy})
  local magic, version, isize, label = string.unpack(sbformat,d.readSector(1))
  assert(magic == "rtfs", "incorrect magic")
- if magic ~= "rtfs" then error("incorrect magic") end
  p.d = d
  p.fstype = "rtfs"
  p.cache, p.handles = {}, {}