build: stop distributing a nano.spec file

We do not provide an RPM package.  And distros like Fedora, Mageia,
and Suse have their own spec files -- they don't need ours.  And in
case anyone would like to create their own RPM package from nano,
they can look at the spec files of those distros.

Makefile.am

@@ -7,6 +7,6 @@ SUBDIRS += syntax
 endif
 
 EXTRA_DIST = ChangeLog.1999-2006 ChangeLog.2007-2015 \
-		IMPROVEMENTS README.GIT nano.spec
+		IMPROVEMENTS README.GIT
 
 ACLOCAL_AMFLAGS = -I m4

configure.ac

@@ -738,7 +738,6 @@ m4/Makefile
 po/Makefile.in
 src/Makefile
 syntax/Makefile
-nano.spec
 ])
 
 AC_OUTPUT

nano.spec.in

@@ -1,52 +0,0 @@
-%define name     @PACKAGE@
-%define version  @VERSION@
-%define release  1
-
-Name    : %{name}
-Version : %{version}
-Release : %{release}
-Summary : a user-friendly editor, a Pico clone with enhancements
-
-License : GPLv3+
-Group   : Applications/Editors
-URL     : https://nano-editor.org/
-Source  : https://nano-editor.org/dist/latest/%{name}-%{version}.tar.gz
-
-BuildRoot       : %{_tmppath}/%{name}-%{version}-root
-BuildRequires   : autoconf, automake, gettext-devel, ncurses-devel, texinfo
-Requires(post)  : info
-Requires(preun) : info
-
-%description
-GNU nano is a small and friendly text editor.  It aims to emulate the
-Pico text editor while also offering several enhancements.
-
-%prep
-%setup -q
-
-%build
-%configure
-make
-
-%install
-make DESTDIR="%{buildroot}" install
-#ln -s nano %{buildroot}/%{_bindir}/pico
-rm -f %{buildroot}/%{_infodir}/dir
-
-%post
-/sbin/install-info %{_infodir}/%{name}.info %{_infodir}/dir || :
-
-%preun
-if [ $1 = 0 ] ; then
-/sbin/install-info --delete %{_infodir}/%{name}.info %{_infodir}/dir || :
-fi
-
-%files
-%defattr(-,root,root)
-%doc AUTHORS COPYING ChangeLog INSTALL NEWS README THANKS TODO doc/faq.html doc/sample.nanorc
-%{_bindir}/*
-%{_docdir}/nano/*
-%{_mandir}/man*/*
-%{_infodir}/nano.info*
-%{_datadir}/locale/*/LC_MESSAGES/nano.mo
-%{_datadir}/nano/*