tests: remove references to DHE-RSA

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/scripts/depends.py b/tests/scripts/depends.py
index 2e8df33..a08ede5 100755
--- a/tests/scripts/depends.py
+++ b/tests/scripts/depends.py
@@ -314,8 +314,7 @@
     'MBEDTLS_PKCS1_V21': ['MBEDTLS_X509_RSASSA_PSS_SUPPORT',
                           'PSA_WANT_ALG_RSA_OAEP',
                           'PSA_WANT_ALG_RSA_PSS'],
-    'MBEDTLS_PKCS1_V15': ['MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED',
-                          'MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED',
+    'MBEDTLS_PKCS1_V15': ['MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED',
                           'MBEDTLS_KEY_EXCHANGE_RSA_ENABLED',
                           'PSA_WANT_ALG_RSA_PKCS1V15_CRYPT',
                           'PSA_WANT_ALG_RSA_PKCS1V15_SIGN'],