tool: remove old ports tool remains

Fixes #2070.

tool/README

@@ -66,10 +66,3 @@ of Genode.
 
   Autopilot is a tool for the automatic execution of run scripts among multiple
   base platforms.
-
-:'prepare.mk':
-
-  Tool for downloading and integrating 3rd-party source codes with Genode.
-  This file is included by the makefiles in the root of source-code
-  repositories that interface with 3rd-party code, e.g., libports and ports.
-

tool/prepare.mk

@@ -1,103 +0,0 @@
-#
-# \brief  Download and unpack upstream library source codes
-# \author Norman Feske
-# \date   2009-10-16
-#
-
-#
-# Print help information by default
-#
-help::
-
-VERBOSE     ?= @
-ECHO         = @echo
-DOWNLOAD_DIR = download
-CONTRIB_DIR  = contrib
-GNU_FIND     = find
-SHELL        = bash
-SIGVERIFIER  = $(CURDIR)/../../tool/download_sigver
-HASHVERIFIER = $(CURDIR)/../../tool/download_hashver
-MAKEFLAGS   += --no-print-directory
-
-#
-# Support for transitioning to the new tool/ports/prepare_port mechanism
-#
-
-# obtain version of the port
-port_version = $(strip $(shell grep "^VERSION" ports/$1.port | sed "s/^.*=//"))
-
-# collect information about ports available via tool/ports/prepare_port
-#NEW_PORTS := $(foreach PORT,$(wildcard ports/*.port),\
-#                   $(notdir $(PORT:.port=))-$(call port_version,$(PORT)))
-NEW_PORTS := $(patsubst %.port,%,$(notdir $(wildcard ports/*.port)))
-
-# generic rule for invoking the new tool/ports/prepare_port mechanism
-$(addprefix prepare-,$(NEW_PORTS)):
-	$(VERBOSE)../../tool/ports/prepare_port $(patsubst prepare-%,%,$@)
-
-#
-# Create download and contrib directory so that '<port>.mk' files
-# do not need to care for them.
-#
-prepare: $(DOWNLOAD_DIR) $(CONTRIB_DIR)
-
-#
-# Utility to check if a tool is installed
-#
-check_tool = $(if $(shell which $(1)),,$(error Need to have '$(1)' installed.))
-
-$(call check_tool,wget)
-$(call check_tool,patch)
-$(call check_tool,gpg)
-$(call check_tool,md5sum)
-$(call check_tool,sha1sum)
-$(call check_tool,sha256sum)
-
-#
-# Include information about available ports
-#
-# Each '<port>.mk' file in the 'ports/' directory extends the following
-# variables:
-#
-# PORTS     - list names of the available ports, e.g., 'freetype-2.3.9'
-# GEN_DIRS  - list of automatically generated directories
-# GEN_FILES - list of automatically generated files
-#
-# Furthermore, each '<port>.mk' file extends the 'prepare' rule for
-# downloading and unpacking the corresponding upstream sources.
-#
-PKG ?= $(patsubst ports/%.mk,%,$(wildcard ports/*.mk)) $(NEW_PORTS)
--include $(addprefix ports/,$(addsuffix .mk,$(PKG)))
-
-LIST_OF_PORTS = $(sort $(PORTS) $(foreach P,$(NEW_PORTS),$P-$(call port_version,$P)))
-
-help::
-	$(ECHO)
-	$(ECHO) "Download and unpack upstream source codes:"
-	@for i in $(LIST_OF_PORTS); do echo "  $$i"; done
-	$(ECHO)
-	$(ECHO) "Downloads will be placed into the '$(DOWNLOAD_DIR)/' directory."
-	$(ECHO) "Source codes will be unpacked in the '$(CONTRIB_DIR)/' directory."
-	$(ECHO)
-	$(ECHO) "--- available commands ---"
-	$(ECHO) "prepare  - download and unpack upstream source codes"
-	$(ECHO) "clean    - remove upstream source codes"
-	$(ECHO) "cleanall - remove upstream source codes and downloads"
-	$(ECHO)
-	$(ECHO) "--- available arguments ---"
-	$(ECHO) "PKG=<package-list>  - prepare only the specified packages,"
-	$(ECHO) "                      each package specified w/o version number"
-
-prepare: $(addprefix prepare-,$(PKG))
-
-$(DOWNLOAD_DIR) $(CONTRIB_DIR):
-	$(VERBOSE)mkdir -p $@
-
-clean: $(addprefix clean-,$(PKG))
-	$(VERBOSE)if [ -d $(CONTRIB_DIR) ]; then \
-                 $(GNU_FIND) $(CONTRIB_DIR) -depth -type d -empty -delete; fi
-
-cleanall: clean
-	$(VERBOSE)rm -rf $(DOWNLOAD_DIR)
-
-.NOTPARALLEL: