[cleanup] Remove redundant static modifiers

Removes static modifier from global inline functions defined in
globals.h.

R=rmcilroy@chromium.org

Bug: v8:9396
Change-Id: Ieacbcbf592d219fb50ab2d23dfbaba27246fb7ae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1728610Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63004}

src/common/globals.h

@@ -1546,12 +1546,12 @@ enum KeyedAccessStoreMode {
 
 enum MutableMode { MUTABLE, IMMUTABLE };
 
-static inline bool IsCOWHandlingStoreMode(KeyedAccessStoreMode store_mode) {
+inline bool IsCOWHandlingStoreMode(KeyedAccessStoreMode store_mode) {
   return store_mode == STORE_HANDLE_COW ||
          store_mode == STORE_AND_GROW_HANDLE_COW;
 }
 
-static inline bool IsGrowStoreMode(KeyedAccessStoreMode store_mode) {
+inline bool IsGrowStoreMode(KeyedAccessStoreMode store_mode) {
   return store_mode == STORE_AND_GROW_HANDLE_COW;
 }