[BE] Remove JNI from libtorch builds (#124995)

Removes jni files from the libtorch build as we do not plan to distribute them.
Pull Request resolved: #124995
Approved by: https://github.com/malfet

.circleci/scripts/binary_populate_env.sh

@@ -100,32 +100,6 @@ if [[ "$PACKAGE_TYPE" =~ .*wheel.* && -n "$PYTORCH_BUILD_VERSION" && "$PYTORCH_B
     fi
 fi
 
-JAVA_HOME=
-BUILD_JNI=OFF
-if [[ "$PACKAGE_TYPE" == libtorch ]]; then
-  POSSIBLE_JAVA_HOMES=()
-  POSSIBLE_JAVA_HOMES+=(/usr/local)
-  POSSIBLE_JAVA_HOMES+=(/usr/lib/jvm/java-8-openjdk-amd64)
-  POSSIBLE_JAVA_HOMES+=(/Library/Java/JavaVirtualMachines/*.jdk/Contents/Home)
-  # Add the Windows-specific JNI path
-  POSSIBLE_JAVA_HOMES+=("$PWD/pytorch/.circleci/windows-jni/")
-  for JH in "${POSSIBLE_JAVA_HOMES[@]}" ; do
-    if [[ -e "$JH/include/jni.h" ]] ; then
-      # Skip if we're not on Windows but haven't found a JAVA_HOME
-      if [[ "$JH" == "$PWD/pytorch/.circleci/windows-jni/" && "$OSTYPE" != "msys" ]] ; then
-        break
-      fi
-      echo "Found jni.h under $JH"
-      JAVA_HOME="$JH"
-      BUILD_JNI=ON
-      break
-    fi
-  done
-  if [ -z "$JAVA_HOME" ]; then
-    echo "Did not find jni.h"
-  fi
-fi
-
 cat >"$envfile" <<EOL
 # =================== The following code will be executed inside Docker container ===================
 export TZ=UTC
@@ -160,8 +134,6 @@ export TORCH_CONDA_BUILD_FOLDER='pytorch-nightly'
 export ANACONDA_USER='pytorch'
 
 export USE_FBGEMM=1
-export JAVA_HOME=$JAVA_HOME
-export BUILD_JNI=$BUILD_JNI
 export PIP_UPLOAD_FOLDER="$PIP_UPLOAD_FOLDER"
 export DOCKER_IMAGE="$DOCKER_IMAGE"