Move lightning.texi up to root, and remove Makefile.am

doc/.cvsignore

@@ -1,3 +0,0 @@
-*.info*
-stamp-*
-version.texi

doc/.gitignore

@@ -1,2 +0,0 @@
-*.info*
-stamp-*

doc/Makefile.am

@@ -1,45 +0,0 @@
-#
-# Copyright 2012-2017 Free Software Foundation, Inc.
-#
-# This file is part of GNU lightning.
-#
-# GNU lightning is free software; you can redistribute it and/or modify it
-# under the terms of the GNU Lesser General Public License as published
-# by the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU lightning is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
-# License for more details.
-#
-
-AM_CFLAGS = -I$(top_srcdir)/include -D_GNU_SOURCE
-
-info_TEXINFOS = lightning.texi
-MOSTLYCLEANFILES = lightning.tmp
-
-lightning_TEXINFOS = body.texi version.texi
-
-noinst_PROGRAMS = incr printf rpn rfib ifib fact
-
-$(top_builddir)/lib/liblightning.la:
-	cd $(top_builddir)/lib; $(MAKE) $(AM_MAKEFLAGS) liblightning.la
-
-incr_LDADD = $(top_builddir)/lib/liblightning.la -lm $(SHLIB)
-incr_SOURCES = incr.c
-
-printf_LDADD = $(top_builddir)/lib/liblightning.la -lm $(SHLIB)
-printf_SOURCES = printf.c
-
-rpn_LDADD = $(top_builddir)/lib/liblightning.la -lm $(SHLIB)
-rpn_SOURCES = rpn.c
-
-rfib_LDADD = $(top_builddir)/lib/liblightning.la -lm $(SHLIB)
-rfib_SOURCES = rfib.c
-
-ifib_LDADD = $(top_builddir)/lib/liblightning.la -lm $(SHLIB)
-ifib_SOURCES = ifib.c
-
-fact_LDADD = $(top_builddir)/lib/liblightning.la -lm $(SHLIB)
-fact_SOURCES = fact.c