[ModuleMap] Dont specify private headers

lib/cocoapods/generator/module_map.rb

@@ -10,17 +10,12 @@ module Pod
       #
       attr_reader :target
 
-      # @return [Array<#to_s>] the private headers of the module
-      #
-      attr_accessor :private_headers
-
       # Initialize a new instance
       #
       # @param  [PodTarget] target @see target
       #
       def initialize(target)
         @target = target
-        @private_headers = []
       end
 
       # Generates and saves the Info.plist to the given path.
@@ -42,24 +37,14 @@ module Pod
       # @return [String]
       #
       def generate
-        result = <<-eos.strip_heredoc
+        <<-MODULE_MAP.strip_heredoc
           framework module #{target.product_module_name} {
             umbrella header "#{target.umbrella_header_path.basename}"
 
             export *
             module * { export * }
-        eos
-
-        result << "\n#{generate_private_header_exports}" unless private_headers.empty?
-        result << "}\n"
-      end
-
-      private
-
-      def generate_private_header_exports
-        private_headers.reduce('') do |string, header|
-          string << %(  private header "#{header}"\n)
-        end
+          }
+        MODULE_MAP
       end
     end
   end

lib/cocoapods/installer/target_installer/pod_target_installer.rb

@@ -22,9 +22,7 @@ module Pod
           create_xcconfig_file
           if target.requires_frameworks?
             create_info_plist_file
-            create_module_map do |generator|
-              generator.private_headers += target.file_accessors.flat_map(&:private_headers).map(&:basename)
-            end
+            create_module_map
             create_umbrella_header do |generator|
               if header_mappings_dir
                 generator.imports += target.file_accessors.flat_map(&:public_headers).map do |pathname|