refactoring: removed unused variable in function

src/main/quizproject.c

@@ -3121,7 +3121,6 @@ void v_allaboutspace(void){
     int space_choice;
     int space_score = 0;
     int space_answer;
-    int space_replay;
     printf("\nEnter your Astronaut name: \n");
     scanf("%s", spacename);
     printf("\nHello, Commander %s! Pleased to have you onboard.\n\n", spacename);