Remove old deps

Delete nexus-mcu.py script that isn't being used anymore
Remove python fixtures dep
Remove duplicate pyserial dep

Bypass-Presubmit-Reason: no presubmits
Change-Id: If46fa2157aa811318da5cba62d1bdc81dbb9c78a

nexus_mcu.py

diff --git a/nexus_mcu.py b/nexus_mcu.py
deleted file mode 100755
index b06d2e4..0000000
--- a/nexus_mcu.py
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2023 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import argparse
-import sys
-import serial
-from pexpect_serial import SerialSpawn
-
-
-def main():
-    parser = argparse.ArgumentParser(description="Run commands on nexus MCU")
-    parser.add_argument(
-        "--nexus_id",
-        action="store",
-        required=True,
-        help="Two digit numeric ID of the nexus board to control")
-    parser.add_argument("command", action='store')
-    args = parser.parse_args()
-
-    fd = serial.Serial(f"/dev/Nexus-FTDI-{args.nexus_id}-MCU-UART", "115200")
-    port = SerialSpawn(fd)
-    # Redirect all port chatter to stdout buffer since it's in binary mode
-    port.logfile = sys.stdout.buffer
-
-    port.send(f"{args.command}\r\n")
-    reply = port.expect([">", "Unrecognized command: .*\r\n>"])
-    if reply:
-        print(f"MCU did not recognize the command \"{args.command}\"")
-        sys.exit(1)
-
-
-if __name__ == "__main__":
-    main()

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 2868bd5..e5e2ec0 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -1,7 +1,3 @@
-# pin to v4.0.0 since newer pushes are broken
-# TODO(jtgans): Remove this pinning once upstream is unborked.
-fixtures==4.0.0
-
 # TODO(hcindyl): Use camkes-deps 0.7.4 directly instead of explicitly installing
 # the depedency packages.
 aenum
@@ -35,10 +31,8 @@
 matplotlib
 netifaces
 pandas
-pexpect-serial
 psutil
 pyfzf
-pyserial
 pyyaml
 requests
 robotframework==6.0.2