remove now-unused patch_file_info

src/patch/patch.rs

@@ -139,7 +139,6 @@ impl SendServerPacket for SendPatchPacket {
 pub struct PatchServerState {
     patch_file_tree: PatchFileTree,
     patch_file_lookup: HashMap<u32, PatchFile>,
-    patch_file_info: Vec<FileInfoReply>,
     client_file_info: HashMap<ClientId, Vec<FileInfoReply>>,
     patch_motd: String,
 }
@@ -149,7 +148,6 @@ impl PatchServerState {
         PatchServerState {
             patch_file_tree,
             patch_file_lookup,
-            patch_file_info: Vec::new(),
             client_file_info: HashMap::new(),
             patch_motd,
         }