remove testing for version 2.1.14

Author: HadhemiDD

cassandra_nodetool/hatch.toml

@@ -2,11 +2,10 @@
 
 [[envs.default.matrix]]
 python = ["3.13"]
-version = ["2.1", "3.0"]
+version = ["3.0"]
 
 [envs.default.overrides]
 matrix.version.env-vars = [
-  { key = "CASSANDRA_VERSION", value = "2.1.14", if = ["2.1"] },
   { key = "CASSANDRA_VERSION", value = "3.0.23", if = ["3.0"] },
 ]