mingw-config: Explicitly disable libgcrypt and libnettle

mingw-config

@@ -69,6 +69,8 @@ test -z "$PREFIX" && PREFIX=/usr/local/$HOST
     --without-libxml2 \
     --with-libexpat \
     --with-libz \
+    --without-libgcrypt \
+    --without-libnettle \
     --with-cppunit-prefix=$PREFIX \
     ARIA2_STATIC=yes \
     CPPFLAGS="-I$PREFIX/include" \