Revert "Read available datum transformations from gdal file"

This reverts commit fa9e81075fa77b7f6b0508da5cee68e598a8597c.
Revert "Add method for preventing composer items from changing mouse cursor and workaround for qt bug 3732"

This reverts commit 9281a9525594dd0252ed4c1dbf401bae94120744.
Revert "Add uuid function for expression engine"

This reverts commit 3637435b4f6a14a06239b559ae9322f5e277bb04.