Remove unused Reason.Overflow

src/tcp/reason.gleam

@@ -4,8 +4,6 @@ pub type Reason {
   /// from `send`
   Closed
 
-  Overflow
-
   /// Address already in use
   Eaddrinuse
   /// Cannot assign requested address
@@ -160,7 +158,6 @@ pub type Reason {
 
 pub fn to_string(reason: Reason) -> String {
   case reason {
-    Overflow -> "overflow"
     Closed -> "Connection closed (closed)"
     Eacces -> "Permission denied (eacces)"
     Eaddrinuse -> "Address already in use (eaddrinuse)"