remove most checks regarding routable/non-routable types.

all types >= 0x01 and <= 0x3f are considered to be routable.
It seems that a routable type used for a non-routable line
is no longer causing problems, so there is no need to warn.

Removed messages:
1) "Non-routable way with routable type ... starting at ...is used for a routable map. This leads to routing errors. Try --check-styles to check the style.
2)"Non-routable type  ...in combination with road_class/road_speed used for routable map. Try --check-styles to check the style."
3) "Warning: routable type ... is used for non-routable line with level 0. This may break routing. Style file ...



git-svn-id: http://svn.mkgmap.org.uk/mkgmap/trunk@3259 25d90789-57f7-4ee0-8453-03a3dfeeeb22