style: remove eslint with frontend code removal ADR

- Add ADR for frontend code removal
- Drop eslint, as explained in the ADR

scripts/all-tests.sh

@@ -11,8 +11,6 @@ set -e
 ###############################################################################
 
 # Violations thresholds for failing the build
-source scripts/thresholds.sh
-
 XSSLINT_THRESHOLDS=$(cat scripts/xsslint_thresholds.json)
 export XSSLINT_THRESHOLDS=${XSSLINT_THRESHOLDS//[[:space:]]/}
 

scripts/eslint.py

@@ -1,78 +0,0 @@
-"""  # pylint: disable=django-not-configured
-Check code quality using eslint.
-"""
-
-import re
-import subprocess
-import shlex
-import sys
-
-
-class BuildFailure(Exception):
-    pass
-
-
-def fail_quality(message):
-    """
-    Fail the specified quality check.
-    """
-
-    raise BuildFailure(message)
-
-
-def run_eslint():
-    """
-    Runs eslint on static asset directories.
-    If limit option is passed, fails build if more violations than the limit are found.
-    """
-    violations_limit = 625
-
-    command = [
-        "node",
-        "--max_old_space_size=4096",
-        "node_modules/.bin/eslint",
-        "--ext", ".js",
-        "--ext", ".jsx",
-        "--format=compact",
-        "lms",
-        "cms",
-        "common",
-        "openedx",
-        "xmodule",
-    ]
-    print("Running command:", shlex.join(command))
-    result = subprocess.run(
-        command,
-        text=True,
-        check=False,
-        capture_output=True
-    )
-
-    print(result.stdout)
-    if result.returncode == 0:
-        fail_quality("No eslint violations found. This is unexpected... are you sure eslint is running correctly?")
-    elif result.returncode == 1:
-        last_line = result.stdout.strip().splitlines()[-1] if result.stdout.strip().splitlines() else ""
-        regex = r'^\d+'
-        try:
-            num_violations = int(re.search(regex, last_line).group(0)) if last_line else 0
-            # Fail if number of violations is greater than the limit
-            if num_violations > violations_limit:
-                fail_quality("FAILURE: Too many eslint violations ({count}).\nThe limit is {violations_limit}.".format(count=num_violations, violations_limit=violations_limit))
-            else:
-                print(f"successfully run eslint with '{num_violations}' violations")
-
-        # An AttributeError will occur if the regex finds no matches.
-        except (AttributeError, ValueError):
-            fail_quality(f"FAILURE: Number of eslint violations could not be found in '{last_line}'")
-    else:
-        print(f"Unexpected ESLint failure with exit code {result.returncode}.")
-        fail_quality(f"Unexpected error: {result.stderr.strip()}")
-
-
-if __name__ == "__main__":
-    try:
-        run_eslint()
-    except BuildFailure as e:
-        print(e)
-        sys.exit(1)

scripts/thresholds.sh

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-export ESLINT_THRESHOLD=4950