Removed duplicated line in bazel.rc

[hermanzdosilovic]

No description provided.

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[hermanzdosilovic]

I signed it!

[googlebot]

CLAs look good, thanks!

[tensorflowbutler]

Nagging Assignee @yifeif: It has been 14 days with no activity and this issue has an assignee. Please update the label and/or status accordingly.

[yifeif]

@hermanzdosilovic could you fix the conflicts? Thanks!

[yifeif]

Thanks @hermanzdosilovic! line build:win-cuda --define=using_cuda=true --define=using_cuda_nvcc=true should still be deleted?