build: Drop syntax-checks from meson test

Those checks are just as well handled by the CI, and removing them
makes for a nice build system cleanup.

https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/116

extensions/meson.build

@@ -3,7 +3,7 @@ js_sources = []
 
 metadata_name = 'metadata.json'
 
-foreach e : all_extensions
+foreach e : enabled_extensions
   uuid = e + uuid_suffix
 
   metadata_conf = configuration_data()
@@ -19,27 +19,11 @@ foreach e : all_extensions
 
   subdir(e)
 
-  js_sources += extension_sources
-
-  if (enabled_extensions.contains(e))
-    install_data (extension_sources + extension_data,
-      install_dir: join_paths(extensiondir, uuid)
-    )
-  endif
+  install_data (extension_sources + extension_data,
+    install_dir: join_paths(extensiondir, uuid)
+  )
 endforeach
 
 install_data (extension_schemas,
   install_dir: schemadir
 )
-
-foreach js_source : js_sources
-  if (js68.found())
-    path_array = '@0@'.format(js_source).split('/')
-    name = join_paths(path_array[-2], path_array[-1])
-
-    test('Checking syntax of ' + name, js68,
-      args: ['-s', '-c', js_source],
-      workdir: meson.current_source_dir()
-    )
-  endif
-endforeach

meson.build

@@ -20,8 +20,6 @@ schemadir = join_paths(datadir, 'glib-2.0', 'schemas')
 sessiondir = join_paths(datadir, 'gnome-session', 'sessions')
 xsessiondir = join_paths(datadir, 'xsessions')
 
-js68 = find_program('js68', required: false)
-
 ver_arr = meson.project_version().split('.')
 if ver_arr[1].to_int().is_even()
   shell_version = '@0@.@1@'.format(ver_arr[0], ver_arr[1])