unix/variants: Fix fast and freedos variants so they build again.

This regressed in bd2fff66Signed-off-by: Damien George <damien@micropython.org>

ports/unix/variants/fast/mpconfigvariant.h

@@ -32,5 +32,3 @@
 // 91 is a magic number proposed by @dpgeorge, which make pystone run ~ at tie
 // with CPython 3.4.
 #define MICROPY_MODULE_DICT_SIZE (91)
-
-#include "variants/DEV/mpconfigvariant.h"

ports/unix/variants/fast/mpconfigvariant.mk

 # build synthetically fast interpreter for benchmarking
 
-COPT += "-fno-crossjumping -O2"
+COPT += -fno-crossjumping -O2
 
 PROG = micropython-fast
 

ports/unix/variants/freedos/mpconfigvariant.h

@@ -36,5 +36,3 @@
 #undef _DIRENT_HAVE_D_INO
 
 #define MICROPY_USE_INTERNAL_ERRNO  (1)
-
-#include "variants/DEV/mpconfigvariant.h"