Remove location namespace in third_party/nearby.

PiperOrigin-RevId: 500023196

internal/platform/byte_array.h

@@ -25,7 +25,6 @@
 
 #include "absl/strings/str_cat.h"
 
-namespace location {
 namespace nearby {
 
 class ByteArray {
@@ -122,6 +121,5 @@ inline bool operator<(const ByteArray& lhs, const ByteArray& rhs) {
 }
 
 }  // namespace nearby
-}  // namespace location
 
 #endif  // PLATFORM_BASE_BYTE_ARRAY_H_