revert fork bomb

Author: VanillaViking

competition/13-time-traveler/run.sh

@@ -1,7 +1,4 @@
 #!/bin/bash
 
-if [ ! -f time-traveler ]; then
-  g++ --std=c++20 src/main.cpp -o time-traveler
-fi
-
+g++ --std=c++20 src/main.cpp -o time-traveler &&
 ./time-traveler $1 $2