Remove useless and not run lines

nalimilan · nalimilan · commit 0f6202c6b2fc · 2016-01-08T20:00:26.000+01:00
Was supposed to be isa(), so was always false. Anyway, one
call path always set s.skip = 0, and the other one happens
when closing.
diff --git a/src/iconv.jl b/src/iconv.jl
@@ -96,10 +96,6 @@ end
 function iconv_reset!(s::Union{StringEncoder, StringDecoder})
     s.cd == C_NULL && return 0
 
-    if is(s, StringDecoder)
-        s.skip = 0
-    end
-
     s.outbufptr[] = pointer(s.outbuf)
     s.outbytesleft[] = BUFSIZE
     ret = ccall((:iconv, :libc), Csize_t,
