Revert "tests: Update generator with Mbed Crypto comments"

This reverts commit dfcf84aea5413ef7c8bc1f30a972ba4ab04bc22b.
diff --git a/tests/scripts/generate_test_code.py b/tests/scripts/generate_test_code.py
index 3a25a84..1fff099 100755
--- a/tests/scripts/generate_test_code.py
+++ b/tests/scripts/generate_test_code.py
@@ -24,12 +24,15 @@
 framework. This doc string contains a summary of the framework
 and explains the function of this script.
 
-Mbed Crypto test suites:
-========================
+Mbed TLS test suites:
+=====================
 Scope:
 ------
-The test suites focus on unit testing the crypto primitives. Tests can be added
-to test any Mbed Crypto module.
+The test suites focus on unit testing the crypto primitives and also
+include x509 parser tests. Tests can be added to test any Mbed TLS
+module. However, the framework is not capable of testing SSL
+protocol, since that requires full stack execution and that is best
+tested as part of the system test.
 
 Test case definition:
 ---------------------