[libc] remove param names from unused uefi functions

Author: RossComputerGuy

libc/src/__support/OSUtil/uefi/io.cpp

@@ -14,11 +14,7 @@
 
 namespace LIBC_NAMESPACE_DECL {
 
-ssize_t read_from_stdin(char *buf, size_t size) {
-  (void)buf;
-  (void)size;
-  return 0;
-}
+ssize_t read_from_stdin(char *, size_t) { return 0; }
 
 void write_to_stdout(cpp::string_view msg) {
   // TODO: use mbstowcs once implemented

libc/src/__support/UEFI/file.cpp

@@ -29,9 +29,7 @@ void File::reset() {
   }
 }
 
-size_t File::read(void *data, size_t len) {
-  (void)data;
-  (void)len;
+size_t File::read(void *, size_t) {
   if (needsReset())
     reset();