java-ant-2.eclass: Drop unused and banned java-ant_remove-taskdefs

It's been on the scrapheap long enough now.

eclass/java-ant-2.eclass

@@ -1,4 +1,4 @@
-# Copyright 2004-2017 Gentoo Foundation
+# Copyright 2004-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: java-ant-2.eclass
@@ -359,40 +359,6 @@ java-ant_rewrite-classpath() {
  fi
 }
 
-# @FUNCTION: java-ant_remove-taskdefs
-# @USAGE: [--name NAME] [path/to/build.xml]
-# @DESCRIPTION:
-# Removes (named) taskdef elements from the build.xml file.
-# When --name NAME is specified, only remove taskdef with name NAME. Otherwise,
-# all taskdefs are removed.
-# The file to rewrite defaults to build.xml when not specified.
-java-ant_remove-taskdefs() {
- debug-print-function ${FUNCNAME} $*
-
- die "${FUNCNAME} has been banned, see bug #479838."
-
- local task_name
- if [[ "${1}" == --name ]]; then
- task_name="${2}"
- shift 2
- fi
- local file="${1:-build.xml}"
- echo "Removing taskdefs from ${file}"
- python <<EOF
-import sys
-from xml.dom.minidom import parse
-dom = parse("${file}")
-for elem in dom.getElementsByTagName('taskdef'):
- if (len("${task_name}") == 0 or elem.getAttribute("name") == "${task_name}"):
- elem.parentNode.removeChild(elem)
- elem.unlink()
-f = open("${file}", "w")
-dom.writexml(f)
-f.close()
-EOF
- [[ $? != 0 ]] && die "Removing taskdefs failed"
-}
-
 # @FUNCTION: java-ant_ignore-system-classes
 # @USAGE: [path/to/build.xml]
 # @DESCRIPTION: