test-js-with-node: Remove stray comments.

When I introduced EXEMPT_FILES, I forgot
to delete these comments, and they became
totally nonsensical after sorting the list
of files.

tools/test-js-with-node

@@ -37,7 +37,6 @@ EXEMPT_FILES = {
     'static/js/billing/helpers.js',
     'static/js/blueslip.js',
     'static/js/blueslip_stacktrace.ts',
-    # Removed temporarily.
     'static/js/channel.js',
     'static/js/click_handlers.js',
     'static/js/compose_actions.js',
@@ -96,7 +95,6 @@ EXEMPT_FILES = {
     'static/js/pointer.js',
     'static/js/poll_widget.js',
     'static/js/popovers.js',
-    # Temporarily missing full coverage
     'static/js/ready.js',
     'static/js/realm_icon.js',
     'static/js/realm_logo.js',