Delete vendor/ and the route proxy's: the build module fetches the modules, the root image builds with -mod=mod (issue 1305, C6)

vendor/github.com/jackc/pgx/v5/pgproto3/doc.go

@@ -1,11 +0,0 @@
-// Package pgproto3 is an encoder and decoder of the PostgreSQL wire protocol version 3.
-//
-// The primary interfaces are Frontend and Backend. They correspond to a client and server respectively. Messages are
-// sent with Send (or a specialized Send variant). Messages are automatically buffered to minimize small writes. Call
-// Flush to ensure a message has actually been sent.
-//
-// The Trace method of Frontend and Backend can be used to examine the wire-level message traffic. It outputs in a
-// similar format to the PQtrace function in libpq.
-//
-// See https://www.postgresql.org/docs/current/protocol-message-formats.html for meanings of the different messages.
-package pgproto3