Remove obsolete C++ indenting scripts

We now use clang-format.

[skip ci]

scripts/indent-c++

-#!/bin/bash
-
-# Reindents the C++ source code files given in argument
-
-[[ -n $1 ]] || { echo "Give filename(s) in argument" 2>&1; exit 1; }
-
-pushd "$(dirname "$0")" > /dev/null
-SCRIPTS_DIR=$(pwd)
-popd > /dev/null
-
-for f in "$@"; do
-    echo "*** Indenting $f…"
-
-    uncrustify -l CPP --replace -c "${SCRIPTS_DIR}"/uncrustify.cfg "$f"
-
-    pushd "$(dirname "$f")" > /dev/null
-    emacs -batch "$(basename "$f")" -l "${SCRIPTS_DIR}"/indent-c++.el
-    popd > /dev/null
-
-    echo
-done

scripts/indent-c++.el

-(c++-mode)
-(setq indent-tabs-mode nil)
-(indent-region (point-min) (point-max))
-(set-buffer-file-coding-system 'utf-8-unix)
-(delete-trailing-whitespace)
-(save-buffer)