Use sources_non_forked folder for pathogen path, with sources_non_forked_fallback folder as fallback.

sources_non_forked/vim-snippets/UltiSnips/haskell.snippets

@@ -1,13 +0,0 @@
-priority -50
-
-snippet imp "Simple import"
-import ${1:${2:Data}.${0:Text}}
-endsnippet
-
-snippet imp2 "Selective import" b
-import ${1:${2:Data}.${3:Text}} (${4})${0}
-endsnippet
-
-snippet impq "Qualified import"
-import qualified ${1:${2:Data}.${3:Text}} as ${0:`!p snip.rv = t[1].split(".")[-1]`}
-endsnippet