Remove rpsec should_not raise_error deprecations

Checking that a specifc error is not raised is deprecated in rspec:
https://github.com/rspec/rspec-expectations/pull/244

spec/lib/msf/core/modules/loader/base_spec.rb

@@ -133,7 +133,7 @@ describe Msf::Modules::Loader::Base do
 					it 'should capture the lexical scope' do
 						expect {
 							namespace_module.module_eval_with_lexical_scope(module_content, module_path)
-						}.to_not raise_error(NameError)
+						}.to_not raise_error
 					end
 
 					context 'with malformed module content' do
@@ -1173,7 +1173,7 @@ describe Msf::Modules::Loader::Base do
 				# not defined on `nil`.
 				expect {
 					subject.send(:restore_namespace_module, parent_module, relative_name, @original_namespace_module)
-				}.to_not raise_error(NoMethodError)
+				}.to_not raise_error
 			end
 
 			context 'with namespace_module nil' do

spec/lib/msf/core/modules/namespace_spec.rb

@@ -229,7 +229,7 @@ describe Msf::Modules::Namespace do
 					it 'should not raise an error' do
 						expect {
 							subject.version_compatible!(module_path, module_reference_name)
-						}.to_not raise_error(Msf::Modules::VersionCompatibilityError)
+						}.to_not raise_error
 					end
 				end
 			end