[macOS] Remove Java 7 (#2631)

* remove java 7

* remove unused function

images/macos/provision/core/openjdk.sh

@@ -1,26 +1,10 @@
 #!/bin/bash -e -o pipefail
 source ~/utils/utils.sh
 
-installAzulJDK() {
-    local URL=$1
-    local TMP_FILE=/tmp/openjdk.dmg
-    local TMP_MOUNT=`/usr/bin/mktemp -d /tmp/zulu.XXXX`
-    # Download dmg
-    download_with_retries $URL "/tmp" "openjdk.dmg"
-    # Attach dmg
-    hdiutil attach "${TMP_FILE}" -mountpoint "${TMP_MOUNT}"
-    # Install pkg
-    sudo installer -pkg "${TMP_MOUNT}/"*.pkg -target /
-    # Detach dmg
-    hdiutil detach "${TMP_MOUNT}"
-    # Remove dmg
-    rm -rf "${TMP_FILE}"
-}
-
 createEnvironmentVariable() {
     local VARIABLE_NAME=$1
     local JAVA_VERSION=$2
-    if [[ $JAVA_VERSION == "7" || $JAVA_VERSION == "8" ]]; then
+    if [[ $JAVA_VERSION == "8" ]]; then
         JAVA_VERSION="1.${JAVA_VERSION}"
     fi
     local JAVA_PATH=$(/usr/libexec/java_home -v${JAVA_VERSION})
@@ -33,11 +17,7 @@ JAVA_VERSIONS_LIST=($(get_toolset_value '.java.versions | .[]'))
 JAVA_DEFAULT=$(get_toolset_value '.java.default')
 for JAVA_VERSION in "${JAVA_VERSIONS_LIST[@]}"
 do
-    if [[ $JAVA_VERSION == "7" ]]; then
-        installAzulJDK "https://cdn.azul.com/zulu/bin/zulu7.44.0.11-ca-jdk7.0.292-macosx_x64.dmg"
-    else
-        brew install --cask "adoptopenjdk${JAVA_VERSION}"
-    fi
+    brew install --cask "adoptopenjdk${JAVA_VERSION}"
     createEnvironmentVariable "JAVA_HOME_${JAVA_VERSION}_X64" $JAVA_VERSION
 done