Revert "[infra] Split Linux arm sim lite CI builders"

This reverts commit ee50ba88.

Reason for revert: builders purple

Original change's description:
> [infra] Split Linux arm sim lite CI builders
>
> Bug: v8:12253
> Change-Id: I9cb67901a5711f251baa411ff57d84fa2049562a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3208029
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Liviu Rau <liviurau@chromium.org>
> Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77439}

Bug: v8:12253
Change-Id: Ifa77aead25746ce368b6207d9e1861b0006664bf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229566
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#77440}

infra/mb/mb_config.pyl

@@ -181,8 +181,8 @@
       'V8 Android Arm - builder': 'release_android_arm',
       'V8 Linux - arm - sim': 'release_simulate_arm',
       'V8 Linux - arm - sim - debug': 'debug_simulate_arm',
-      'V8 Linux - arm - sim - lite - builder': 'release_simulate_arm_lite',
-      'V8 Linux - arm - sim - lite - debug builder': 'debug_simulate_arm_lite',
+      'V8 Linux - arm - sim - lite': 'release_simulate_arm_lite',
+      'V8 Linux - arm - sim - lite - debug': 'debug_simulate_arm_lite',
       # Arm64.
       'V8 Android Arm64 - builder': 'release_android_arm64',
       'V8 Android Arm64 - debug builder': 'debug_android_arm64',