Revert "Valgrind: Suppress leak in net::SSLHostInfo::StartDnsLookup."

This reverts commit r70714 which was a suppression for a bug fixed in
r70737.

BUG=68820
TEST=valgrind

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70738 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions.txt

@@ -3648,20 +3648,3 @@
    fun:_ZN3net22HttpNetworkTransaction5StartEPKNS_15HttpRequestInfoEP14CallbackRunnerI6Tuple1IiEERKNS_11BoundNetLogE
    fun:_ZN3net9HttpCache11Transaction13DoSendRequestEv
 }
-{
-   bug_68820
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_Z11NewCallbackIN3net11SSLHostInfoEiEPN9Callback1IT0_E4TypeEPT_MS7_FvS3_E
-   fun:_ZN3net11SSLHostInfo14StartDnsLookupEPNS_13DnsRRResolverE
-   fun:_ZN3net13SSLConnectJob12DoTCPConnectEv
-   fun:_ZN3net13SSLConnectJob6DoLoopEi
-   fun:_ZN3net13SSLConnectJob15ConnectInternalEv
-   fun:_ZN3net10ConnectJob7ConnectEv
-   fun:_ZN3net8internal26ClientSocketPoolBaseHelper21RequestSocketInternalERKSsPKNS1_7RequestE
-   fun:_ZN3net8internal26ClientSocketPoolBaseHelper13RequestSocketERKSsPKNS1_7RequestE
-   fun:_ZN3net20ClientSocketPoolBaseINS_15SSLSocketParamsEE13RequestSocketERKSsRK13scoped_refptrIS1_ENS_15RequestPriorityEPNS_18ClientSocketHandleEP14CallbackRunnerI6Tuple1IiEERKNS_11BoundNetLogE
-   fun:_ZN3net19SSLClientSocketPool13RequestSocketERKSsPKvNS_15RequestPriorityEPNS_18ClientSocketHandleEP14CallbackRunnerI6Tuple1IiEERKNS_11BoundNetLogE
-   fun:_ZN3net18ClientSocketHandle4InitINS_15SSLSocketParamsENS_19SSLClientSocketPoolEEEiRKSsRK13scoped_refptrIT_ENS_15RequestPriorityEP14CallbackRunnerI6Tuple1IiEEPT0_RKNS_11BoundNetLogE
-   fun:_ZN3net17HttpStreamRequest16DoInitConnectionEv
-}