[infra] Drop header-includes check from gcc bots

There is already a builder v8_linux64_header_includes_dbg blocking CQ
and a CI counterpart for this feature. Also switching it on for gcc
doesn't add value, just a slow-down of the gcc bots.

No-Try: true
Bug: v8:13005
Change-Id: Id20112928b8db406ce998cf463ddb3f95aa8e361
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3747859
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81550}

infra/mb/mb_config.pyl

@@ -529,8 +529,7 @@
     'release_x64_fuchsia_trybot': [
       'release_trybot', 'x64', 'fuchsia'],
     'release_x64_gcc': [
-      'release_bot_no_goma', 'x64', 'gcc', 'lld', 'no_custom_libcxx',
-      'v8_check_header_includes'],
+      'release_bot_no_goma', 'x64', 'gcc', 'lld', 'no_custom_libcxx'],
     'release_x64_gcc_coverage': [
       'release_bot_no_goma', 'x64', 'coverage', 'gcc', 'lld',
       'no_custom_libcxx', 'no_sysroot'],
@@ -593,8 +592,7 @@
     'debug_x64_fuchsia': [
       'debug_bot', 'x64', 'fuchsia'],
     'debug_x64_gcc': [
-      'debug_bot_no_goma', 'x64', 'gcc', 'lld', 'no_custom_libcxx',
-      'v8_check_header_includes'],
+      'debug_bot_no_goma', 'x64', 'gcc', 'lld', 'no_custom_libcxx'],
     'debug_x64_header_includes': [
       'debug_bot', 'x64', 'v8_check_header_includes'],
     'debug_x64_heap_sandbox': [
@@ -639,11 +637,10 @@
       'release_bot', 'x86', 'asan', 'lsan', 'symbolized',
       'v8_verify_heap'],
     'release_x86_gcc': [
-      'release_bot_no_goma', 'x86', 'gcc', 'lld', 'no_custom_libcxx',
-      'v8_check_header_includes'],
+      'release_bot_no_goma', 'x86', 'gcc', 'lld', 'no_custom_libcxx'],
     'release_x86_gcc_minimal_symbols': [
       'release_bot_no_goma', 'x86', 'gcc', 'lld', 'no_custom_libcxx',
-      'minimal_symbols', 'v8_check_header_includes'],
+      'minimal_symbols'],
     'release_x86_gcmole': [
       'release_bot', 'x86', 'gcmole'],
     'release_x86_gcmole_trybot': [