Startup without specific device header file

Hey guys, ı am new at embedded programming and ı am following a video course on udemy. In that course the lecturer using open stm32 system workbench based on eclipse and ı am using keil. in the course we will create an specific header file. For that the lecturer creating a project in eclipse with no firmware package i.e only startup files exist. And ı am trying to create the same project on keil so in manage run time environment ı am selecting Startup and CMSIS: Core. But in my project the specific header file is already exist (You can see from the image below). How should I create my project? 


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