[cr142][ios] MaterialComponents removed upstream

Chromium changes:
https://chromium.googlesource.com/chromium/src/+/5068b9f045eb4ce7a2d57ea33998ddf60bea2a2c

commit 5068b9f045eb4ce7a2d57ea33998ddf60bea2a2c
Author: Sylvain Defresne <sdefresne@chromium.org>
Date:   Fri Sep 19 09:03:38 2025 -0700

    [ios] Remove MaterialComponents and its dependencies

    Those libraries are no longer used, so remove them from DEPS and
    git submodules.

    This is part of a multi CL change:
     -  http://cl/808555604
     -  https://crrev.com/i/8602518
     => https://crrev.com/c/6966159

    Fixed: 443947340
    Change-Id: I05ce8d11347e2cb3225653062dd520384725847b
    Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6966159
    Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
    Reviewed-by: Rick Byers <rbyers@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#1517995}

script/ios_bootstrap.py

@@ -63,10 +63,7 @@ def create_required_spm_resources(force=False):
     # These are essentially the bare-essential requirements for SPM to validate
     # the Package.swift manifest: The existence of the xcframework directory
     # itself, plus a valid Info.plist inside it.
-    frameworks = [
-        'BraveCore', 'MaterialComponents', 'NalaAssets',
-        'PartitionAllocSupport'
-    ]
+    frameworks = ['BraveCore', 'NalaAssets', 'PartitionAllocSupport']
     for frmk in frameworks:
         framework_dir = os.path.join(ios_current_link, f'{frmk}.xcframework')
         if force and os.path.exists(framework_dir):