Remove .md and image files and move python files into main chapter folders

thinkcspy/Chapter-11-Exercises/Python-files/Problem3.py

@@ -1,23 +0,0 @@
-# Runestone.Academy thinkcspy course
-# Chapter 11
-# Problem 3
-
-sdfile = open("studentdata.txt", "r")
-
-for line in sdfile:
-    student = line.split()
-    mingrade = student[1]
-    maxgrade = student[1]
-    
-    for grade in student:
-        if grade != student[0]:
-            if int(grade) < int(mingrade):
-                mingrade = grade
-            if int(grade) > int(maxgrade):
-                maxgrade = grade
-                
-    outputText = "{} - minimum score:{}; maximum score:{}".format(student[0], mingrade, maxgrade)
-                
-    print(outputText)
-    
-sdfile.close()