[Issue-43] Update SwiftLint config file to latest

Author: Mark Pospesel

.swiftlint.yml

@@ -4,7 +4,6 @@ disabled_rules: # rule identifiers turned on by default to exclude from running
   - multiple_closures_with_trailing_closure
 
 opt_in_rules: # some rules are turned off by default, so you need to opt-in
-  - anyobject_protocol
   - contains_over_first_not_nil
   - empty_count
   - first_where
@@ -20,7 +19,6 @@ opt_in_rules: # some rules are turned off by default, so you need to opt-in
   - operator_whitespace
   - prohibited_interface_builder
   - unneeded_parentheses_in_closure_argument
-  - unused_import
   - vertical_whitespace_closing_braces
   - vertical_whitespace_opening_braces