GTK: Fix valgrind errors in previous wmclass patch.

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
diff --git a/tools/valgrind/memcheck/suppressions.txt b/tools/valgrind/memcheck/suppressions.txt
index 4e37bab114ce2a89cf46f271b2943bfb9d6f22ce..b23b68460dbf94fdca80cb85b13bdad543f06a05 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -4441,25 +4441,6 @@
    fun:_ZN7fileapi18FileWriterDelegate14OnDataReceivedEi
 }
 {
-   bug_80282
-   Memcheck:Addr1
-   ...
-   fun:gtk_window_set_wmclass
-   fun:_ZN16BrowserWindowGtk4InitEv
-   fun:_ZN13BrowserWindow19CreateBrowserWindowEP7Browser
-   fun:_ZN7Browser19CreateBrowserWindowEv
-   fun:_ZN7Browser17InitBrowserWindowEv
-   fun:_ZN7Browser12CreateForAppERKSsRKN3gfx4SizeEP7Profileb
-   fun:_ZN7Browser21OpenApplicationWindowEP7ProfilePK9ExtensionN14extension_misc15LaunchContainerERK4GURLPPS_
-   fun:_ZN7Browser21OpenAppShortcutWindowEP7ProfileRK4GURLb
-   fun:_ZN11BrowserInit17LaunchWithProfile21OpenApplicationWindowEP7Profile
-   fun:_ZN11BrowserInit17LaunchWithProfile6LaunchEP7ProfileRKSt6vectorI4GURLSaIS4_EEb
-   fun:_ZN11BrowserInit13LaunchBrowserERK11CommandLineP7ProfileRK8FilePathbPi
-   fun:_ZN11BrowserInit18ProcessCmdLineImplERK11CommandLineRK8FilePathbP7ProfilePiPS_
-   fun:_ZN11BrowserInit5StartERK11CommandLineRK8FilePathP7ProfilePi
-   fun:_Z11BrowserMainRK18MainFunctionParams
-}
-{
    bug_80284
    Memcheck:Leak
    fun:_Znw*