Kernel: Remove duplicative kgettimeofday(timeval&) function

Kernel/FileSystem/TmpFS.cpp

@@ -280,8 +280,7 @@ KResultOr<NonnullRefPtr<Inode>> TmpFSInode::create_child(const String& name, mod
     if (dev != 0)
         return ENOTSUP;
 
-    struct timeval now;
-    kgettimeofday(now);
+    struct timeval now = kgettimeofday();
 
     InodeMetadata metadata;
     metadata.mode = mode;

Kernel/Process.cpp

@@ -386,11 +386,6 @@ timeval kgettimeofday()
     return TimeManagement::now().to_timeval();
 }
 
-void kgettimeofday(timeval& tv)
-{
-    tv = kgettimeofday();
-}
-
 siginfo_t Process::wait_info()
 {
     siginfo_t siginfo {};

Kernel/Process.h

@@ -56,7 +56,6 @@ namespace Kernel {
 
 // FIXME: Should use AK::Time internally
 timeval kgettimeofday();
-void kgettimeofday(timeval&);
 
 #define ENUMERATE_PLEDGE_PROMISES         \
     __ENUMERATE_PLEDGE_PROMISE(stdio)     \