remove unused Plack::Middleware::Header

Author: haarg

cpanfile

@@ -113,7 +113,6 @@ requires 'PAUSE::Permissions', '0.17';
 requires 'PerlIO::gzip';
 requires 'Plack', '1.0048';
 requires 'Plack::App::Directory';
-requires 'Plack::Middleware::Header';
 requires 'Plack::Middleware::ReverseProxy';
 requires 'Plack::Middleware::Session';
 requires 'Plack::Session::Store';

cpanfile.snapshot

@@ -6062,17 +6062,6 @@ DISTRIBUTIONS
       parent 0
       strict 0
       warnings 0
-  Plack-Middleware-Header-0.04
-    pathname: C/CH/CHIBA/Plack-Middleware-Header-0.04.tar.gz
-    provides:
-      Plack::Middleware::Header 0.04
-    requirements:
-      ExtUtils::MakeMaker 6.42
-      Filter::Util::Call 0
-      Plack::Middleware 0
-      Test::More 0
-      parent 0
-      perl 5.008001
   Plack-Middleware-MethodOverride-0.20
     pathname: M/MI/MIYAGAWA/Plack-Middleware-MethodOverride-0.20.tar.gz
     provides: