File project.diff of Package dwarfs

--- dwarfs.spec.orig
+++ dwarfs.spec
@@ -36,7 +36,6 @@ BuildRequires:  libboost_iostreams-devel
 BuildRequires:  libboost_process-devel
 BuildRequires:  libboost_program_options-devel
 BuildRequires:  libboost_regex-devel
-BuildRequires:  libboost_system-devel
 BuildRequires:  libboost_thread-devel
 BuildRequires:  ninja
 BuildRequires:  parallel-hashmap-devel