Remove env vars

libu/system.c

@@ -89,14 +89,6 @@ int create_volume(const char* key, int fs_type, const char* device_key) {
   return (int)do_syscall(SYS_CREATE_VOLUME, key, fs_type, device_key);
 }
 
-int env_set(int pgid, const char* key, void* buffer, size_t len) {
-  return (int)do_syscall(SYS_ENV_SET, pgid, key, buffer, len);
-}
-
-int env_get(int pgid, const char* key, void* buffer, size_t len) {
-  return (int)do_syscall(SYS_ENV_GET, pgid, key, buffer, len);
-}
-
 int exec_partial(const char* volume, const char* path, const char* cmdline) {
   return (int)do_syscall(SYS_EXEC_PARTIAL, volume, path, cmdline);
 }