[gnome-shell-extensions] Revert "ci: Import run-eslint script from gnome-shell"

[Florian Müllner <fmuellner src gnome org>]

commit ecf608ead8185f2e4cf0142a8e591377bc149d9d
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Sep 14 01:55:58 2019 +0200

    Revert "ci: Import run-eslint script from gnome-shell"
    
    Filtering errors by changed lines in a merge request means some
    errors can slip through, for example when an import becomes unused
    but isn't removed.
    
    That's more common than rules changing behind our back, so revert
    to running eslint directly again.
    
    This reverts commit 119da3291bc149d14acf4a30e261a97ae55ab1f0.

 .gitlab-ci.yml           |  7 +++--
 .gitlab-ci/run-eslint.sh | 78 ------------------------------------------------
 2 files changed, 5 insertions(+), 80 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b008266..8f6b13a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,6 +3,9 @@ stages:
  - source_check
  - build
 
+variables:
+ LINT_LOG: "eslint-report.txt"
+
 .only_default: &only_default
     only:
         - branches
@@ -21,11 +24,11 @@ eslint:
   image: registry.gitlab.gnome.org/gnome/gnome-shell/extension-ci:v1
   stage: source_check
   script:
-    - ./.gitlab-ci/run-eslint.sh
+    - eslint -o $LINT_LOG --no-color || { cat $LINT_LOG; false; }
   <<: *only_default
   artifacts:
     paths:
-      - reports
+      - ${LINT_LOG}
     when: on_failure
 
 build-shell-extensions: