Removed threading package option.

It didn't do what I thought it did.
2013-01-05 18:43:09 +01:00 · 2013-01-05 18:43:09 +01:00 · fc79e0a3a8
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -30,7 +30,6 @@ else()
    find_package(OpenGL REQUIRED)
 endif()

-set(CMAKE_THREAD_PREFER_PTHREAD OFF)
 find_package(Threads REQUIRED)

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