remove test case for RSA keys with a key length of 1024 bits

RSA 1024 keys aren't currently supported by the Cumulocity Certificate Authority feature.
It is unclear whether they will be allowed or not in the future given that the key size
is considered to be insecure.

Signed-off-by: reubenmiller <reuben.d.miller@gmail.com>

Author: reubenmiller

tests/RobotFramework/tests/pkcs11/private_key_storage.robot

@@ -88,7 +88,7 @@ Connects to C8y using an RSA key
     type=rsa    bits=4096
     type=rsa    bits=3072
     type=rsa    bits=2048
-    type=rsa    bits=1024
+    # type=rsa    bits=1024    # RSA 1024 is considered to be insecure is not supported when using the Cumulocity Certificate Authority feature
 
 Connects to C8y supporting all TLS13 ECDSA signature algorithms
     [Documentation]    Check that we support all ECDSA sigschemes used in TLS1.3, i.e: ecdsa_secp256r1_sha256,