Remove WEAK_FOR_NATIVE_BRIDGE for fork

Bug: 145028007
Test: bionic-unit-tests
Change-Id: I0b019cd08c9d7426a953bd199f2ecd6dd42db00e
diff --git a/libc/bionic/fork.cpp b/libc/bionic/fork.cpp
index c9a1ca8..a3fdcd2 100644
--- a/libc/bionic/fork.cpp
+++ b/libc/bionic/fork.cpp
@@ -41,7 +41,6 @@
                nullptr, nullptr, &(self->tid));
 }
 
-__BIONIC_WEAK_FOR_NATIVE_BRIDGE
 int fork() {
   __bionic_atfork_run_prepare();