[infra] Remove obsolete builder configs

Remove configs for bots that were removed. Dedicated focal bots and
x86 gcc bots.

Bug: chromium:1307180, v8:13005
Change-Id: I482829f6644642b3d9fe1b380b2a3edaba2045d4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3747869Reviewed-by: Alexander Schulze <alexschulze@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81561}

infra/mb/mb_config.pyl

@@ -103,9 +103,6 @@
       'V8 Linux64 TSAN - no-concurrent-marking - builder': 'release_x64_tsan_no_cm',
       'V8 Linux - arm64 - sim - CFI - builder': 'release_simulate_arm64_cfi',
       'V8 Linux - arm64 - sim - MSAN - builder': 'release_simulate_arm64_msan',
-      # Misc.
-      'V8 Linux gcc - builder': 'release_x86_gcc',
-      'V8 Linux focal gcc - builder': 'release_x86_gcc',
       # FYI.
       'V8 iOS - sim - builder': 'release_x64_ios_simulator',
       'V8 Linux64 - arm64 - sim - heap sandbox - debug - builder': 'debug_x64_heap_sandbox_arm64_sim',
@@ -120,7 +117,6 @@
           'release_simulate_arm64_pointer_compression',
       'V8 Linux64 gcc - builder': 'release_x64_gcc',
       'V8 Linux64 gcc - debug builder': 'debug_x64_gcc',
-      'V8 Linux64 focal gcc - debug builder': 'debug_x64_gcc',
       'V8 Fuchsia - builder': 'release_x64_fuchsia',
       'V8 Fuchsia - debug builder': 'debug_x64_fuchsia',
       'V8 Linux64 - cfi - builder': 'release_x64_cfi',
@@ -222,9 +218,6 @@
       'v8_linux_noi18n_compile_dbg': 'debug_x86_no_i18n',
       'v8_linux_noi18n_rel_ng': 'release_x86_no_i18n_trybot',
       'v8_linux_gc_stress_dbg_ng': 'debug_x86_trybot',
-      'v8_linux_gcc_compile_rel': 'release_x86_gcc_minimal_symbols',
-      'v8_linux_focal_gcc_compile_rel': 'release_x86_gcc_minimal_symbols',
-      'v8_linux_gcc_rel_ng': 'release_x86_gcc_minimal_symbols',
       'v8_linux_shared_compile_rel': 'release_x86_shared_verify_heap',
       'v8_linux_vtunejit': 'debug_x86_vtunejit',
       'v8_linux64_arm64_pointer_compression_rel_ng':
@@ -238,8 +231,6 @@
       'v8_linux64_gcc_compile_dbg': 'debug_x64_gcc',
       'v8_linux64_gcc_compile_rel': 'release_x64_gcc',
       'v8_linux64_gcc_rel_ng': 'release_x64_gcc',
-      'v8_linux64_focal_gcc_compile_dbg': 'debug_x64_gcc',
-      'v8_linux64_focal_gcc_compile_rel': 'release_x64_gcc',
       'v8_linux64_gcov_coverage': 'release_x64_gcc_coverage',
       'v8_linux64_header_includes_dbg': 'debug_x64_header_includes',
       'v8_linux64_heap_sandbox_dbg_ng': 'debug_x64_heap_sandbox',
@@ -636,11 +627,6 @@
     'release_x86_asan_symbolized_verify_heap': [
       'release_bot', 'x86', 'asan', 'lsan', 'symbolized',
       'v8_verify_heap'],
-    'release_x86_gcc': [
-      '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'],
     'release_x86_gcmole': [
       'release_bot', 'x86', 'gcmole'],
     'release_x86_gcmole_trybot': [

infra/testing/builders.pyl

@@ -108,14 +108,6 @@
       {'name': 'd8testing', 'test_args': ['--gc-stress'], 'shards': 5},
     ],
   },
-  'v8_linux_gcc_rel_ng_triggered': {
-    'swarming_dimensions' : {
-      'os': 'Ubuntu-18.04',
-    },
-    'tests': [
-      {'name': 'v8testing'},
-    ],
-  },
   'v8_linux_nodcheck_rel_ng_triggered': {
     'swarming_dimensions' : {
       'cpu': 'x86-64-avx2',
@@ -1134,22 +1126,6 @@
       {'name': 'v8testing'},
     ],
   },
-  'V8 Linux gcc': {
-    'swarming_dimensions' : {
-      'os': 'Ubuntu-18.04',
-    },
-    'tests': [
-      {'name': 'v8testing'},
-    ],
-  },
-  'V8 Linux gcc focal': {
-    'swarming_dimensions' : {
-      'os': 'Ubuntu-18.04',
-    },
-    'tests': [
-      {'name': 'v8testing'},
-    ],
-  },
   'V8 Linux64': {
     'swarming_dimensions': {
       'cpu': 'x86-64-avx2',