[leak fixlet] Remove dead suppressions after leak fix in ProfileSyncServiceAutofillTest.

tools/heapcheck/suppressions.txt

 # There are three kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 1475 matching lines @@
    bug_117389
    Heapcheck:Leak
    ...
    fun:TestURLRequestContextGetter::GetURLRequestContext
    ...
    fun:notifier::Login::StartConnection
    fun:sync_notifier::InvalidationNotifier::UpdateCredentials
    fun:sync_notifier::NonBlockingInvalidationNotifier::Core::UpdateCredentials
 }
 {
-   bug_117427_a
-   Heapcheck:Leak
-   fun:__gnu_cxx::new_allocator::allocate
-   fun:std::_Rb_tree::_M_get_node
-   fun:std::_Rb_tree::_M_create_node
-   fun:std::_Rb_tree::_M_insert_
-   fun:std::_Rb_tree::_M_insert_unique
-   fun:std::map::insert
-   fun:net::ExpiringCache::Put
-   fun:net::HostCache::Set
-   fun:net::HostResolverImpl::CacheResult
-   fun:net::HostResolverImpl::Job::CompleteRequests
-   fun:net::HostResolverImpl::Job::OnProcTaskComplete
-}
-{
-   bug_117427_b
-   Heapcheck:Leak
-   ...
-   fun:std::_Rb_tree::_M_create_node
-   fun:std::_Rb_tree::_M_insert_
-   fun:std::_Rb_tree::_M_insert_unique
-   fun:std::map::insert
-   fun:net::ExpiringCache::Put
-   fun:net::HostCache::Set
-   fun:net::MockHostResolverBase::ResolveProc
-   fun:net::MockHostResolverBase::ResolveNow
-}
-{
    bug_124758
    Heapcheck:Leak
    fun:sqlite3MemMalloc
    fun:crypto::RSAPrivateKey::FindFromPublicKeyInfo
    fun:crypto::RSAPrivateKeyNSSTest_*_Test::TestBody
 }
 {
    bug_125129_a
    Heapcheck:Leak
    ...
@@ skipping 48 matching lines @@
    fun:SiteInstanceImpl::GetProcess
    fun:content::RenderViewHostImpl::RenderViewHostImpl
    fun:RenderViewHostFactory::Create
    fun:RenderViewHostManager::Init
    fun:WebContentsImpl::WebContentsImpl
    fun:content::TestWebContents::TestWebContents
    fun:content::WebContentsTester::CreateTestWebContents
    fun:::OneClickSigninHelperTest::CreateMockWebContents
    fun:OneClickSigninHelperTest_*
 }