AppCache: Remove an unused memory leak suppression

tools/valgrind/memcheck/suppressions.txt

 # There are four 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 # running overnight and removing outdated bugs/suppressions.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 1335 matching lines @@
    fun:_ZN4skia15ImageOperations6ResizeE*
 }
 {
    bug_106912
    Memcheck:Leak
    ...
    fun:*tracked_objects*ThreadData*InitializeThreadContext*
    fun:*base*PlatformThread*SetName*
 }
 {
-   bug_111669
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN8appcache17AppCacheDiskCache10ActiveCall17OnAsyncCompletionEi
-}
-{
    bug_112278
    Memcheck:Uninitialized
    fun:fetch_texel_2d_f_rgba8888
    ...
    fun:sample_nearest_2d
    fun:fetch_texel_lod
    fun:fetch_texel
    fun:_mesa_execute_program
    fun:run_program*
    fun:_swrast_exec_fragment_program
@@ skipping 2234 matching lines @@
   fun:calloc
   ...
   fun:ssl3_HandleClientHello
   fun:ssl3_HandleHandshakeMessage
   fun:ssl3_HandleHandshake
   fun:ssl3_HandleRecord
   fun:ssl3_GatherCompleteHandshake
   fun:SSL_ForceHandshake
   fun:_ZN3net18SSLServerSocketNSS11DoHandshakeEv
 }