Limit number ffdh test cases (ffdhe2048, ffdhe8192)

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/tests/scripts/generate_tls13_compat_tests.py b/tests/scripts/generate_tls13_compat_tests.py
index b0f718b..0c61e76 100755
--- a/tests/scripts/generate_tls13_compat_tests.py
+++ b/tests/scripts/generate_tls13_compat_tests.py
@@ -68,9 +68,6 @@
     'x25519': 0x1d,
     'x448': 0x1e,
     'ffdhe2048': 0x100,
-    'ffdhe3072': 0x101,
-    'ffdhe4096': 0x102,
-    'ffdhe6144': 0x103,
     'ffdhe8192': 0x104,
 }
 
@@ -152,9 +149,6 @@
         'x25519': 'X25519',
         'x448': 'X448',
         'ffdhe2048': 'ffdhe2048',
-        'ffdhe3072': 'ffdhe3072',
-        'ffdhe4096': 'ffdhe4096',
-        'ffdhe6144': 'ffdhe6144',
         'ffdhe8192': 'ffdhe8192',
     }
 
@@ -186,7 +180,7 @@
         ret = ["requires_openssl_tls1_3"]
 
         # ffdh groups require at least openssl 3.0
-        ffdh_groups = ['ffdhe2048', 'ffdhe3072', 'ffdhe4096', 'ffdhe6144', 'ffdhe8192']
+        ffdh_groups = ['ffdhe2048', 'ffdhe8192']
 
         if any(x in ffdh_groups for x in self._named_groups):
             ret.append('requires_openssl_3_x')
@@ -264,9 +258,6 @@
         'x25519': ['GROUP-X25519'],
         'x448': ['GROUP-X448'],
         'ffdhe2048': ['GROUP-FFDHE2048'],
-        'ffdhe3072': ['GROUP-FFDHE3072'],
-        'ffdhe4096': ['GROUP-FFDHE4096'],
-        'ffdhe6144': ['GROUP-FFDHE6144'],
         'ffdhe8192': ['GROUP-FFDHE8192'],
     }