import re
p = re.compile(r'(?<=[a-zA-Z]),(?=[a-zA-Z\s])')
test_str = "2015,1674,240/09,PEOPLE V. MICHAEL JORDAN,15,15\n2015,2135,602832/09,DOYLE V ICON, LLC,15,15"
result = p.sub("", test_str)
print(result)
aW1wb3J0IHJlCnAgPSByZS5jb21waWxlKHInKD88PVthLXpBLVpdKSwoPz1bYS16QS1aXHNdKScpCnRlc3Rfc3RyID0gIjIwMTUsMTY3NCwyNDAvMDksUEVPUExFIFYuIE1JQ0hBRUwgSk9SREFOLDE1LDE1XG4yMDE1LDIxMzUsNjAyODMyLzA5LERPWUxFIFYgSUNPTiwgTExDLDE1LDE1IgpyZXN1bHQgPSBwLnN1YigiIiwgdGVzdF9zdHIpCnByaW50KHJlc3VsdCk=
2015,1674,240/09,PEOPLE V. MICHAEL JORDAN,15,15
2015,2135,602832/09,DOYLE V ICON LLC,15,15