Fix tests for checking adding breakpoint while running (PY-24026)

python/testData/debug/test_runtoline.py

@@ -1,17 +1,12 @@
 from time import sleep
 
-
-def foo(x):
-    print(x)
-
 x = 0
 print(x)
-foo(x)
-while x<2:
-    x+=1
+while x < 2:
+    x += 1
     print(x)
 
-x+=10
+x += 10
 print("x = %d" % x)
 while True:
-    sleep(0.1)
+    sleep(0.1)