Removed unnecessary gcov source file filtering

Other previous fixes and improvements prevent anything but release source files from being compiled with coverage

lib/ceedling/project_config_manager.rb

@@ -22,14 +22,7 @@ def merge_options(config_hash, option_filepath)
     config_hash.deep_merge!( @yaml_wrapper.load( option_filepath ) )
   end 
 
-
-  def filter_internal_sources(sources)
-    filtered_sources = sources.clone
-    filtered_sources.delete_if { |item| item =~ /#{CMOCK_MOCK_PREFIX}.+#{Regexp.escape(EXTENSION_SOURCE)}$/ }
-    filtered_sources.delete_if { |item| item =~ /#{VENDORS_FILES.map{|source| '\b' + Regexp.escape(source.ext(EXTENSION_SOURCE)) + '\b'}.join('|')}$/ }
-    return filtered_sources
-  end
-
+
   def process_release_config_change
     # has project configuration changed since last release build
     @release_config_changed = @cacheinator.diff_cached_release_config?( @config_hash )

plugins/gcov/lib/gcov.rb

@@ -122,7 +122,6 @@ def report_per_file_coverage_results()
       heading = @ceedling[:plugin_reportinator].generate_heading( test )
       @ceedling[:streaminator].stdout_puts(heading)
 
-      sources = @ceedling[:project_config_manager].filter_internal_sources(sources)
       sources.each do |source|
         filename = File.basename(source)
         name     = filename.ext('')