Remove a bunch of unreferenced files

Plus a small number of obsolete packages (like old versions of qemu).

pkgs/development/interpreters/spidermonkey/builder.sh

@@ -1,31 +0,0 @@
-source $stdenv/setup
-
-set -e
-set -x
-
-tar zxf $src
-cd js/src
-
-
-# Extend Makefile to dump some of its variables we want to know.
-cat >> Makefile.ref <<EOF
-printlibraries :
-	@echo \$(LIBRARY) \$(SHARED_LIBRARY) > LIBRARIES
-
-printprograms :
-	@echo \$(PROGRAM) > PROGRAMS
-EOF
-
-MAKE="make -f Makefile.ref"
-
-$MAKE printlibraries
-$MAKE printprograms
-$MAKE
-
-mkdir -p $out
-mkdir -p $out/bin
-mkdir -p $out/lib
-
-# Install the binaries that have been created.
-install $(cat PROGRAMS) $out/bin
-install $(cat LIBRARIES) $out/lib