global class DailyAccountProcessor implements Schedulable {
    
    global void execute(SchedulableContext ctx) {
         integer a = 0;
       list<Account> lstAccDelete = new list<Account>();
       list<Account> lstAcc = new list<Account>();
        for(Integer i=0;i<10;i++){
            Account Acc= new Account();
            Acc.Name = 'Test ' + i;
            /*Fill Other Necessary Fields*/
            lstAcc.Add(Acc);
        }
        insert lstAcc;
       list<Account> extraAcc = [select Id,Name,CreatedDate From Account where CreatedDate = Today order By CreatedDate DESC];
        For(Account Acc : extraAcc){
            a++;
            system.debug('How Many Records Inserted Today this Includes Testclass Records Also ' + a);
            if(a>=11){
                lstAccDelete.Add(Acc);
            }
        }
        delete lstAccDelete;
        list<Account> Acc = [select Id,Name,CreatedDate From Account where CreatedDate = Today order By CreatedDate DESC];
        system.debug('After dleteing Exrta Records' + Acc.size());
          system.debug(Acc);
    }
}


Test Class

@isTest
public class DailyAccountProcessorTest {
     public static String CRON_EXP = '0 0 0 2 6 ? 2022';
@istest
    public Static void unitTest(){
         list<Account> lstAcc = new list<Account>();
        for(Integer i=0;i<20;i++){
            Account Acc= new Account();
            Acc.Name = 'Tester ' + i;
            /*Fill Other Necessary Fields*/
            lstAcc.Add(Acc);
        }
        insert lstAcc;
            
        String jobId = System.schedule('test', CRON_EXP, new DailyAccountProcessor());
    }
}