meson: Remove autotools build files

Remove autotools build files as switching to meson.

Tested: meson build passes 'ninja -C build'

Change-Id: I4203c103b1355b78dec931c064da55e88f26e894
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/.gitignore b/.gitignore
index be28da4..6da54be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,60 +1,3 @@
-settings_file.py
-
-# http://www.gnu.org/software/automake
-
-Makefile.in
-/ar-lib
-/mdate-sh
-/py-compile
-/test-driver
-/ylwrap
-
-# http://www.gnu.org/software/autoconf
-
-/autom4te.cache
-/autoscan.log
-/autoscan-*.log
-/aclocal.m4
-/compile
-/config.guess
-/config.h.in
-/config.sub
-/configure
-/configure.scan
-/depcomp
-/install-sh
-/missing
-/stamp-h1
-
-# https://www.gnu.org/software/libtool/
-
-/ltmain.sh
-
-# http://www.gnu.org/software/texinfo
-
-/texinfo.tex
-
-# Repo Specific Items
-*.o
-/config.h
-/config.h.in~
-/config.log
-/config.status
-Makefile
-.deps
-.dirstamp
-/lib*
-.libs/
-/*-libtool
-.project
-/test/*.log
-/test/*.trs
-# ignore vim swap files
-.*.sw*
-# failures from patch
-*.orig
-*.rej
-# backup files from some editors
-*~
-.cscope/
-build/
+build*/
+subprojects/*
+!subprojects/*.wrap