[TF2XLA] Do not set redundant variable when compiling with XLA
[TF2XLA] Do not set redundant variable when compiling with XLA

If XLA support is already enabled, there is no need to set the environment variable (which is only a trigger to enable this support)

PiperOrigin-RevId: 325154534
Change-Id: Iab9bf804050d0c87ad8b1b01290fec2879fd5eb9

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