diff --git a/lib/solargraph/yard_map/to_method.rb b/lib/solargraph/yard_map/to_method.rb
deleted file mode 100644
index 010db89a5..000000000
--- a/lib/solargraph/yard_map/to_method.rb
+++ /dev/null
@@ -1,89 +0,0 @@
-# frozen_string_literal: true
-
-module Solargraph
-  class YardMap
-    class ToMethod
-      module InnerMethods
-        module_function
-
-        # @param code_object [YARD::CodeObjects::Base]
-        # @param location [Solargraph::Location]
-        # @param comments [String]
-        # @return [Array<Solargraph::Pin::Parameter>]
-        def get_parameters code_object, location, comments
-          return [] unless code_object.is_a?(YARD::CodeObjects::MethodObject)
-          # HACK: Skip `nil` and `self` parameters that are sometimes emitted
-          # for methods defined in C
-          # See https://github.com/castwide/solargraph/issues/345
-          # @sg-ignore https://github.com/castwide/solargraph/pull/1114
-          code_object.parameters.select { |a| a[0] && a[0] != 'self' }.map do |a|
-            Solargraph::Pin::Parameter.new(
-              location: location,
-              closure: self,
-              comments: comments,
-              name: arg_name(a),
-              presence: nil,
-              decl: arg_type(a),
-              asgn_code: a[1],
-              source: :yard_map
-            )
-          end
-        end
-
-        # @param a [Array<String>]
-        # @return [String]
-        def arg_name a
-          a[0].gsub(/[^a-z0-9_]/i, '')
-        end
-
-        # @param a [Array]
-        # @return [::Symbol]
-        def arg_type a
-          if a[0].start_with?('**')
-            :kwrestarg
-          elsif a[0].start_with?('*')
-            :restarg
-          elsif a[0].start_with?('&')
-            :blockarg
-          elsif a[0].end_with?(':')
-            a[1] ? :kwoptarg : :kwarg
-          elsif a[1]
-            :optarg
-          else
-            :arg
-          end
-        end
-      end
-      private_constant :InnerMethods
-
-      include Helpers
-
-      # @param code_object [YARD::CodeObjects::MethodObject]
-      # @param name [String, nil]
-      # @param scope [Symbol, nil]
-      # @param visibility [Symbol, nil]
-      # @param closure [Solargraph::Pin::Base, nil]
-      # @param spec [Solargraph::Pin::Base, nil]
-      # @return [Solargraph::Pin::Method]
-      def make code_object, name = nil, scope = nil, visibility = nil, closure = nil, spec = nil
-        closure ||= Solargraph::Pin::Namespace.new(
-          name: code_object.namespace.to_s,
-          gates: [code_object.namespace.to_s]
-        )
-        location = object_location(code_object, spec)
-        comments = code_object.docstring ? code_object.docstring.all.to_s : ''
-        Pin::Method.new(
-          location: location,
-          closure: closure,
-          name: name || code_object.name.to_s,
-          comments: comments,
-          scope: scope || code_object.scope,
-          visibility: visibility || code_object.visibility,
-          parameters: InnerMethods.get_parameters(code_object, location, comments),
-          explicit: code_object.is_explicit?,
-          source: :yard_map
-        )
-      end
-    end
-  end
-end