rm obsolete valgrind suppressions

Author: thestinger

src/etc/x86.supp

@@ -373,14 +373,6 @@
    fun:_ZN4llvm4UsernwEjj
 }
 
-{
-   libuv-0-byte-realloc
-   Memcheck:Leak
-   fun:malloc
-   ...
-   fun:*uv_loop_delete*
-}
-
 {
    race-or-something-ask-pcwalton-0
    Memcheck:Value4
@@ -502,15 +494,3 @@
    fun:*
    ...
 }
-
-{
-   libuv-mac-no-thread-join
-   Memcheck:Leak
-   fun:malloc_zone_malloc
-   fun:_CFRuntimeCreateInstance
-   fun:CFRunLoopSourceCreate
-   fun:uv__platform_loop_init
-   fun:uv__loop_init
-   fun:uv_loop_new
-   ...
-}