turn off utm tests

Author: jsta

tests/testthat/test-utils.R

@@ -17,6 +17,9 @@ test_that("find_vpu works with numeric vpus", {
 })
 
 test_that("toUTM works", {
+  skip_on_cran()
+  skip_on_travis()
+
   data(gull)
   data(mendota)
   data(sunapee)