Set TX_TOKEN for transifex client

I did some tests on my own fork, and we're writing to ~/.transifexrc but
the client can't seem to read that file. maybe issue with $HOME or
something.

Workaround is to set TX_TOKEN environment variable and now the pesky
~/.transifexrc file is not needed.

.ci/scripts/transifex/docker.sh

@@ -3,14 +3,6 @@
 # SPDX-FileCopyrightText: 2021 yuzu Emulator Project
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-# Setup RC file for tx
-cat << EOF > ~/.transifexrc
-[https://www.transifex.com]
-rest_hostname = https://rest.api.transifex.com
-token         = $TRANSIFEX_API_TOKEN
-EOF
-
-
 set -x
 
 echo -e "\e[1m\e[33mBuild tools information:\e[0m"