test: remove no-longer required conditions to check if Node.js version is v14

Author: phanect

test-packages/test.sh

@@ -33,11 +33,6 @@ for PKGDIR in $(find "${TMP}/test-packages/failure/" -maxdepth 1 -type d ! -path
   npm install --save-dev "eslint@${ESLINT_VERSION}" "${PROJECT_ROOT}/${PACKAGE}"
 
   if [[ "${PKGDIR}" = "${TMP}/test-packages/failure/missing-ts-eslint" ]]; then
-    # skip if Node.js version == 14.x
-    if [[ -n "$(node --version | grep '^v14\.')" ]]; then
-      continue
-    fi
-
     if [[ -z "$((npm run lint 2>&1) | grep "eslint-plugin-editorconfig requires typescript and @typescript-eslint/eslint-plugin to lint \*.ts files. Run \`npm install typescript @typescript-eslint/eslint-plugin\`.")" ]]; then
       echo "Error message is not shown properly when @typescript-eslint/eslint-plugin is missing" >&2
       echo "ESLint's error message:"