Remove autotools support

The intent behind this commit is build phosphor-led-sysfs with meson,
So clean up the autotools support.

Tested: built phosphor-led-sysfs successfully and worked.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I217c3bf8e992bd3e58008559ee7adc313821b44c
5 files changed