Don't force C++14

Summary: Remove compiler arguments which insist on C++14.

Reviewed By: kjchalup

Differential Revision: D38858887

fbshipit-source-id: 542173ec97cacfa724d14c8a4b9ce9dc2457c5d5

setup.py

@@ -49,7 +49,7 @@ def get_extensions():
     source_cuda = glob.glob(os.path.join(extensions_dir, "**", "*.cu"), recursive=True)
     extension = CppExtension
 
-    extra_compile_args = {"cxx": ["-std=c++14"]}
+    extra_compile_args = {"cxx": []}
     define_macros = []
     include_dirs = [extensions_dir]
 
@@ -73,8 +73,6 @@ def get_extensions():
             "-D__CUDA_NO_HALF_CONVERSIONS__",
             "-D__CUDA_NO_HALF2_OPERATORS__",
         ]
-        if os.name != "nt":
-            nvcc_args.append("-std=c++14")
         if cub_home is None:
             prefix = os.environ.get("CONDA_PREFIX", None)
             if prefix is not None and os.path.isdir(prefix + "/include/cub"):