Refactor RobotLangVisitorUser to improve student ID extraction and clean up code

Q1/Artefacts/RobotLangVisitorUser.py

@@ -5,9 +5,7 @@ class RobotLangVisitorUser(RobotLangVisitor):
         self.student_id = "Unknown"
 
     def visitHeader(self, ctx):
-        # Extract the number directly from the script
         self.student_id = ctx.NUMBER().getText()
-        # Continue walking the rest of the tree
         return self.visitChildren(ctx)
 
     def visitMoveStat(self, ctx):
@@ -29,14 +27,13 @@ class RobotLangVisitorUser(RobotLangVisitor):
         return self.visitChildren(ctx)
 
     def visitLogStat(self, ctx):
-        val = ctx.STRING().getText()
+        val = ctx.STRING().getText()[1:-1]
         print(f"{self.student_id} is logging: {val}.")
         return self.visitChildren(ctx)
 
     def visitRepeatStat(self, ctx):
         times = int(ctx.NUMBER().getText())
         for _ in range(times):
-            # Visit all statements inside the repeat block
             for stat_ctx in ctx.stat():
                 self.visit(stat_ctx)
         return None