eclipses: minor cleanups

* remove unused arguments

* clean up documentation comment for update.sh a bit

pkgs/applications/editors/eclipse/default.nix

@@ -11,10 +11,8 @@
   zlib,
   glib,
   gtk3,
-  gtk2,
   libXtst,
   jdk,
-  jdk8,
   gsettings-desktop-schemas,
   webkitgtk_4_1 ? null, # for internal web browser
   buildEnv,
@@ -22,10 +20,12 @@
   callPackage,
 }:
 
-# use ./update.sh to help with updating for each quarterly release
+# ./update.sh fully automates updating for each quarterly release.  you can run
+# it manually, or wait for https://nix-community.github.io/nixpkgs-update/ to do
+# so.
 #
-# then, to test:
-# for e in cpp dsl embedcpp modeling platform sdk java jee committers rcp; do for s in pkgs pkgsCross.aarch64-multiplatform; do echo; echo $s $e; nix-build -A ${s}.eclipses.eclipse-${e} -o eclipse-${s}-${e}; done; done
+# then, to test (on x86_64):
+# for e in $(cat pkgs/applications/editors/eclipse/eclipses.json | jq '.eclipses | keys | .[] | ascii_downcase' -r); do for s in pkgs pkgsCross.aarch64-multiplatform; do echo; echo $s $e; nix-build -A ${s}.eclipses.eclipse-${e} -o eclipse-${s}-${e}; done; done
 
 let
   eclipses = lib.trivial.importJSON ./eclipses.json;