Kernel/LibC: Add syscall and wrapper for unlink

libc/include/sys/syscall.h

@@ -58,6 +58,7 @@ __BEGIN_DECLS
 #define SYS_CHMOD 55
 #define SYS_CREATE 56 // creat, mkfifo
 #define SYS_CREATE_DIR 57 // mkdir
+#define SYS_UNLINK 58
 
 __END_DECLS
 

libc/unistd.cpp

@@ -210,6 +210,11 @@ void syncsync(int should_block)
 	syscall(SYS_SYNC, should_block);
 }
 
+int unlink(const char* path)
+{
+	return syscall(SYS_UNLINK, path);
+}
+
 pid_t getpid(void)
 {
 	return syscall(SYS_GET_PID);