transition to cli11 instead of custom arg parser

Transition to use cli11 for argument parsing instead of a custom
argument parser.

Tested: Not tested on hardware.
Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I9c516c8c2d76e35c6c31592f96e8f281e9d47ad6
diff --git a/Makefile.am b/Makefile.am
index 1dd50c3..6e65ea1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,7 +5,7 @@
 
 sbin_PROGRAMS = phosphor-read-eeprom
 
-phosphor_read_eeprom_SOURCES = readeeprom.cpp argument.cpp
+phosphor_read_eeprom_SOURCES = readeeprom.cpp
 phosphor_read_eeprom_LDFLAGS = $(SYSTEMD_LIBS) \
 	$(libmapper_LIBS) \
 	$(PHOSPHOR_LOGGING_LIBS)