Remove src-side configs for memory.full builders.

tools/mb/mb_config.pyl

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This is a .pyl, or "Python Literal", file. You can treat it just like a
 # .json file, with the following exceptions:
 # * all keys must be quoted (use single quotes, please);
 # * comments are allowed, using '#' syntax; and
 # * trailing commas are allowed.
 
@@ skipping 294 matching lines @@
 
     'chromium.memory': {
       'Linux ASan LSan Builder': 'asan_lsan_release_trybot',
       'Linux Chromium OS ASan LSan Builder': 'asan_lsan_chromeos_release_trybot',
       'Linux ChromiumOS MSan Builder': 'chromeos_msan_release_bot',
       'Linux MSan Builder': 'msan_release_bot',
       'Linux TSan Builder': 'tsan_disable_nacl_release_bot',
       'Mac ASan 64 Builder': 'asan_full_symbols_disable_nacl_release_bot_dcheck_always_on',
     },
 
-    'chromium.memory.fyi': {
-      'Chromium Linux ChromeOS MSan Builder': 'chromeos_msan_release_bot',
-      'Chromium Linux MSan Builder': 'msan_release_bot',
-    },
-
-    'chromium.memory.full': {
-      'Chromium Linux ChromeOS MSan Builder': 'chromeos_msan_release_bot',
-      'Chromium Linux MSan Builder': 'msan_release_bot',
-      'Chromium Linux TSan Builder': 'tsan_disable_nacl_release_bot',
-    },
-
     'chromium.perf': {
       'Android Builder': 'official_goma_minimal_symbols_android',
       'Android arm64 Builder': 'official_goma_minimal_symbols_android_arm64',
       'Android Compile': 'official_goma_minimal_symbols_android',
       'Android arm64 Compile': 'official_goma_minimal_symbols_android_arm64',
       'Linux Builder': 'official_goma',
       'Mac Builder': 'official_goma',
       'Win Builder': 'official_goma_x86',
       'Win x64 Builder': 'official_goma',
     },
@@ skipping 1601 matching lines @@
 
     'x64': {
       'gn_args': 'target_cpu="x64"',
     },
 
     'x86': {
       'gn_args': 'target_cpu="x86"',
     },
   },
 }