Switch libFuzzer UBSan build to non-component build mode again.

TBR=bpastene@chromium.org, inferno@chromium.org

Bug: 701825, 911856
Change-Id: I205073ad7f85d770556fd570fa558ae52404f0e3
Reviewed-on: https://chromium-review.googlesource.com/c/1374153Reviewed-by: Max Moroz <mmoroz@chromium.org>
Reviewed-by: Abhishek Arya <inferno@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615974}

tools/mb/mb_config.pyl

@@ -1494,7 +1494,7 @@
     ],
 
     'libfuzzer_ubsan_release_bot': [
-      'libfuzzer', 'ubsan_security', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
+      'libfuzzer', 'ubsan_security', 'release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
     ],
 
     'libfuzzer_mac_asan_release_bot': [