Remove unused method define() in the private mojoPrivate extensions API.

Bug: 699569,718047
Change-Id: I2ebda3e66b6cb7f74cb6bc3f577f978022374a14
Reviewed-on: https://chromium-review.googlesource.com/750191
Reviewed-by: Ken Rockot <rockot@chromium.org>
Commit-Queue: Yuzhu Shen <yzshen@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#513529}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: eca9c1de14c95fc5c4f23f1b2b144349de5f2817
diff --git a/memcheck/suppressions.txt b/memcheck/suppressions.txt
index 24bb24f..14383d6 100644
--- a/memcheck/suppressions.txt
+++ b/memcheck/suppressions.txt
@@ -2405,19 +2405,6 @@
    fun:_ZN10extensions11ApiTestBase5SetUpEv
 }
 {
-   bug_448700_b
-   Memcheck:Leak
-   fun:_Znw*
-   ...
-   fun:_ZN10extensions12_GLOBAL__N_111TestNatives24GetObjectTemplateBuilderEPN2v87IsolateE
-   fun:_ZN3gin13WrappableBase14GetWrapperImplEPN2v87IsolateEPNS_11WrapperInfoE
-   fun:_ZN3gin9WrappableIN10extensions12_GLOBAL__N_111TestNativesEE10GetWrapperEPN2v87IsolateE
-   fun:_ZN3gin12CreateHandleIN10extensions12_GLOBAL__N_111TestNativesEEENS_6HandleIT_EEPN2v87IsolateEPS5_
-   fun:_ZN10extensions12_GLOBAL__N_111TestNatives6CreateEPN2v87IsolateERKN4base8CallbackIFvvEEE
-   fun:_ZN10extensions11ApiTestBase7RunTestERKSsS2_
-   fun:_ZN10extensions30MojoPrivateApiTest_Define_Test8TestBodyEv
-}
-{
    bug_449156_a
    Memcheck:Leak
    fun:_Znw*