Revert of Add nacl_loader_unittests to the chromium_builder_tests...

Revert of Add nacl_loader_unittests to the chromium_builder_tests (https://codereview.chromium.org/260003005/)

Reason for revert:
Unconditionally adds a nacl dependency, breaks disable_nacl=1 builds

Original issue's description:
> Add nacl_loader_unittests to the chromium_builder_tests
> 
> TEST=ninja -C out/Release chromium_builder_tests
> BUG=364751
> R=hidehiko@chromium.org
> TBR=mseaborn@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266521

TBR=hidehiko@chromium.org,mseaborn@chromium.org,hamaji@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=364751

Review URL: https://codereview.chromium.org/256933004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266534 0039d316-1c4b-4281-b951-d872f2087c98

build/all.gyp

@@ -340,7 +340,6 @@
         }],
         ['OS=="linux"', {
           'dependencies': [
-            '../components/nacl.gyp:nacl_loader_unittests',
             '../dbus/dbus.gyp:dbus_unittests',
             '../sandbox/sandbox.gyp:sandbox_linux_unittests',
           ],