Revert of Add build targets for Opus tests.

Revert of Add build targets for Opus tests. (patchset #5 id:80001 of https://codereview.chromium.org/890473002/)

Reason for revert:
Broke Mac GN (dbg) bot.

[169/1394] STAMP obj/third_party/cacheinvalidation/cacheinvalidation_unittests.inputdeps.stamp
FAILED: ../../third_party/llvm-build/Release+Asserts/bin/clang -MMD -MF obj/third_party/opus/src/tests/test_opus_decode.test_opus_decode.o.d -DCHROMIUM_BUILD -DV8_DEPRECATION_WARNINGS -DCLD_VERSION=2 -DENABLE_NOTIFICATIONS -DENABLE_PEPPER_CDMS -DENABLE_PLUGINS=1 -DENABLE_PRINTING=1 -DENABLE_BASIC_PRINTING=1 -DENABLE_PRINT_PREVIEW=1 -DENABLE_SPELLCHECK=1 -DUSE_OPENSSL=1 -DNO_TCMALLOC -DDISABLE_NACL -DENABLE_EXTENSIONS=1 -DENABLE_CONFIGURATION_POLICY -DENABLE_TASK_MANAGER=1 -DENABLE_THEMES=1 -DENABLE_CAPTIVE_PORTAL_DETECTION=1 -DENABLE_SESSION_SERVICE=1 -DENABLE_PLUGIN_INSTALLATION=1 -DENABLE_APP_LIST=1 -DENABLE_SETTINGS_APP=1 -DENABLE_SUPERVISED_USERS=1 -DENABLE_SERVICE_DISCOVERY=1 -DENABLE_AUTOFILL_DIALOG=1 -DENABLE_WIFI_BOOTSTRAPPING=1 -DENABLE_REMOTING=1 -DENABLE_GOOGLE_NOW=1 -DENABLE_ONE_CLICK_SIGNIN -DENABLE_HIDPI=1 -DV8_USE_EXTERNAL_STARTUP_DATA -DCR_CLANG_REVISION=223108 -D_DEBUG -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DWTF_USE_DYNAMIC_ANNOTATIONS=1 -I../.. -Igen -I../../third_party/opus/src/celt -I../../third_party/opus/src/silk -I../../third_party/opus/src/include -fno-strict-aliasing -fstack-protector-all -arch x86_64 -fcolor-diagnostics -Wendif-labels -Werror -Wno-missing-field-initializers -Wno-unused-parameter -Wnewline-eof -Wno-c++11-narrowing -Wno-char-subscripts -Wno-covered-switch-default -Wno-deprecated-register -Wno-unneeded-internal-declaration -Wno-reserved-user-defined-literal -Wno-inconsistent-missing-override -fvisibility=hidden -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.6 -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.dylib -Xclang -add-plugin -Xclang find-bad-constructs -Wheader-hygiene -Wstring-conversion -O0 -g2 -Wno-absolute-value -std=c99 -c ../../third_party/opus/src/tests/test_opus_decode.c -o obj/third_party/opus/src/tests/test_opus_decode.test_opus_decode.o
../../third_party/opus/src/tests/test_opus_decode.c:138:64: error: null passed to a callee that requires a non-null argument [-Werror,-Wnonnull]
         out_samples = opus_decode(dec[t], packet, 0, 0, 0, fec);
                                                      ~        ^
1 error generated.
ninja: build stopped: subcommand failed.

http://build.chromium.org/p/chromium.mac/builders/Mac%20GN%20%28dbg%29/builds/3538

Original issue's description:
> Add build targets for Opus tests.
>
> test_opus_api, test_opus_encode, test_opus_decode, and test_opus_padding
> can be run directly, with no command-line options, and they print out
> "OK" during the test and an overall status message such as
> "All API tests passed." or "Tests completed successfully." at the end.
>
> The celt component has several unit tests. I didn't add build targets
> for them because some of them don't print any output, so you'd need a
> test harness script to examine their exit status.
>
> R=henrika@chromium.org,sergeyu@chromium.org
> BUG=452984
>
> Committed: https://crrev.com/bfcc6156a8f2107ecd70445b08e60299737caffa
> Cr-Commit-Position: refs/heads/master@{#313964}

TBR=henrika@chromium.org,sergeyu@chromium.org,brettw@chromium.org,wtc@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=452984
Committed: https://crrev.com/f6cba75468a9a3096ee50195faa2bff6ec4bcadc
Cr-Commit-Position: refs/heads/master@{#313965}

[please use gerrit instead, 2015-01-30 19:57:46]

Created Revert of Add build targets for Opus tests.

[commit-bot: I haz the power, 2015-01-30 19:58:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/888963002/1

[commit-bot: I haz the power, 2015-01-30 20:00:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-30 20:01:31]

Patchset 1 (id:??) landed as
https://crrev.com/f6cba75468a9a3096ee50195faa2bff6ec4bcadc
Cr-Commit-Position: refs/heads/master@{#313965}

[wtc, 2015-02-03 03:20:51]

LGTM. Thank you for covering for me.