Remove the old WSL configuration

I have already created something more sophisticated, so this is no longer needed.

conf.d/old-wsl-sockets.fish

@@ -1,24 +0,0 @@
-if test "$NEED_WSL_SOCAT" = "1"
-    # WSL Socket forwarding
-    if begin
-            status is-interactive; and string sub (uname -r) WSL >/dev/null
-        end
-        # Commands to run in interactive sessions can go here
-
-        # Channel Pageant to WSL2
-        set -x SSH_AUTH_SOCK "$HOME/.ssh/agent.sock"
-        if not ss -a | grep -q "$SSH_AUTH_SOCK"
-            rm -f "$SSH_AUTH_SOCK"
-            set wsl2_ssh_pageant_bin "$HOME/.ssh/wsl2-ssh-pageant.exe"
-            if test -x "$wsl2_ssh_pageant_bin"
-                setsid nohup socat UNIX-LISTEN:"$SSH_AUTH_SOCK,fork" EXEC:"$wsl2_ssh_pageant_bin" >/dev/null 2>&1 &
-            else
-                echo >&2 "WARNING: $wsl2_ssh_pageant_bin is not executable."
-            end
-            set --erase wsl2_ssh_pageant_bin
-        end
-        # machina
-    else if not set -q SSH_AUTH_SOCK or string match -q "$HOME/.cache/keyring-*/ssh" $SSH_AUTH_SOCK
-        set -gx SSH_AUTH_SOCK {$XDG_RUNTIME_DIR}gnupg/S.gpg-agent.ssh
-    end
-end