Remove config/project_list.txt from manifest

Author: adangel

Manifest.txt

@@ -10,7 +10,6 @@ bin/pmdtester
 config/all-java.xml
 config/design.xml
 config/project-list.xml
-config/project_list.txt
 config/projectlist_1_0_0.xsd
 lib/pmdtester/pmdtester.rb
 lib/pmdtester/builders/diff_builder.rb