Remove fastlib

MSP-11368
MSP-11143

Remove fastlib as it slows down the code loading process.  From the
previous commit, the mean loading for
`METASPLOIT_FRAMEWORK_PROFILE=true msfconsole -q -x exit` was
27.9530±0.3485 seconds (N=10).  The mean after removal of fastlib
was 17.9820±0.6497 seconds (N=10).  This means an average 35.67%
reduction in boot time.

Author: limhoff-r7

.simplecov

@@ -39,7 +39,6 @@ SimpleCov.configure do
 	# Other library groups
 	#
 
-	add_group 'Fastlib', 'lib/fastlib'
 	add_group 'Metasm', 'lib/metasm'
 	add_group 'PacketFu', 'lib/packetfu'
 	add_group 'Rex', 'lib/rex'

LICENSE

@@ -87,10 +87,6 @@ Files: lib/bit-struct.rb lib/bit-struct/*
 Copyright: 2005-2009, Joel VanderWerf
 License: Ruby
 
-Files: lib/fastlib.rb
-Copyright: 2011, Rapid7, Inc.
-License: Ruby
-
 Files: lib/metasm.rb lib/metasm/* data/cpuinfo/*
 Copyright: 2006-2010 Yoann GUILLOT
 License: LGPL-2.1