Remove obsolete code, now that we support subprocess calls on Windows.
Remove obsolete code, now that we support subprocess calls on Windows.

Also, use ptxas.exe as binary name when running on platform Windows.

PiperOrigin-RevId: 319976095
Change-Id: I4af4deaa1a9911b27aaf252f2fc0a39976d295d3

davidzchen/tensorflow,tensorflow/tensorflow,aldian/tensorflow,tensorflow/tensorflow-pywrap_saved_model,freedomtan/tensorflow,davidzchen/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,petewarden/tensorflow,annarev/tensorflow,cxxgtxy/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,sarvex/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow,davidzchen/tensorflow,davidzchen/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,frreiss/tensorflow-fred,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,freedomtan/tensorflow,annarev/tensorflow,sarvex/tensorflow,karllessard/tensorflow,Intel-Corporation/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,gautam1858/tensorflow,petewarden/tensorflow,aam-at/tensorflow,freedomtan/tensorflow,aam-at/tensorflow,tensorflow/tensorflow,sarvex/tensorflow,tensorflow/tensorflow,aam-at/tensorflow,paolodedios/tensorflow,aam-at/tensorflow,cxxgtxy/tensorflow,Intel-tensorflow/tensorflow,sarvex/tensorflow,aldian/tensorflow,frreiss/tensorflow-fred,Intel-Corporation/tensorflow,aam-at/tensorflow,annarev/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,freedomtan/tensorflow,gautam1858/tensorflow,yongtang/tensorflow,gautam1858/tensorflow,aam-at/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,paolodedios/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,yongtang/tensorflow,davidzchen/tensorflow,Intel-tensorflow/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,sarvex/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,paolodedios/tensorflow,paolodedios/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,freedomtan/tensorflow,paolodedios/tensorflow,annarev/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,paolodedios/tensorflow,freedomtan/tensorflow,gautam1858/tensorflow,annarev/tensorflow,tensorflow/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,freedomtan/tensorflow,cxxgtxy/tensorflow,paolodedios/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,frreiss/tensorflow-fred,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_tf_optimizer,davidzchen/tensorflow,aldian/tensorflow,freedomtan/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow,frreiss/tensorflow-fred,petewarden/tensorflow,frreiss/tensorflow-fred,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aldian/tensorflow,annarev/tensorflow,yongtang/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,annarev/tensorflow,karllessard/tensorflow,aldian/tensorflow,karllessard/tensorflow,karllessard/tensorflow,paolodedios/tensorflow,petewarden/tensorflow,gautam1858/tensorflow,Intel-Corporation/tensorflow,Intel-tensorflow/tensorflow,frreiss/tensorflow-fred,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-experimental_link_static_libraries_once,frreiss/tensorflow-fred,Intel-Corporation/tensorflow,karllessard/tensorflow,Intel-Corporation/tensorflow,yongtang/tensorflow,aldian/tensorflow,tensorflow/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_saved_model,karllessard/tensorflow,freedomtan/tensorflow,frreiss/tensorflow-fred,aam-at/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,davidzchen/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,yongtang/tensorflow,Intel-Corporation/tensorflow,yongtang/tensorflow,petewarden/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,annarev/tensorflow,aam-at/tensorflow,karllessard/tensorflow,Intel-Corporation/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,petewarden/tensorflow,yongtang/tensorflow,freedomtan/tensorflow,cxxgtxy/tensorflow,aldian/tensorflow,annarev/tensorflow,paolodedios/tensorflow,karllessard/tensorflow,cxxgtxy/tensorflow,cxxgtxy/tensorflow,davidzchen/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,freedomtan/tensorflow,Intel-tensorflow/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,karllessard/tensorflow,sarvex/tensorflow,aam-at/tensorflow,aam-at/tensorflow,cxxgtxy/tensorflow,tensorflow/tens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