Revert "Disable color when running x.py"

This reverts commit bc97df3bc793e73c8f658033209e0e78613b62c9.

Reason for revert: Causing *upload_rust bots to fail:
"error: the argument '--color <WHEN>' cannot be used multiple times"

Original change's description:
> Disable color when running x.py
>
> By default, color output is enabled. Logging from build bots has "[1m[32m" at the output, which makes it harder to read.
>
> Change-Id: Idb0d30c86c77ffb1cc1a7b15288c9f96bd621b8e
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5665607
> Auto-Submit: Zequan Wu <zequanwu@google.com>
> Reviewed-by: Arthur Eubanks <aeubanks@google.com>
> Commit-Queue: Zequan Wu <zequanwu@google.com>
> Cr-Commit-Position: refs/heads/main@{#1321915}

Change-Id: I55a4e950f2324b7dc26c6b70b44cd5843a6e28ed
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5672444
Auto-Submit: Zequan Wu <zequanwu@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1322280}
NOKEYCHECK=True
GitOrigin-RevId: 2b574cda4f5ab7be03aac0acce2b5c167a6cc23d

Author: ZequanWu

build_rust.py

@@ -452,10 +452,10 @@ def quote_string(s: str):
     def run(self, sub, args):
         ''' Run x.py subcommand with specified args. '''
         os.chdir(RUST_SRC_DIR)
-        cmd = [sys.executable, 'x.py', sub] + args + ['--color', 'never']
+        cmd = [sys.executable, 'x.py', sub]
         if self._verbose and self._verbose > 0:
             cmd.append('-' + self._verbose * 'v')
-        RunCommand(cmd, setenv=True, env=self._env)
+        RunCommand(cmd + args, setenv=True, env=self._env)
         os.chdir(CHROMIUM_DIR)
 
     def get_env(self):