Remove codegen-client dependency from Python server (#2307)

Author: jdisanti

codegen-server/python/build.gradle.kts

@@ -24,7 +24,6 @@ val smithyVersion: String by project
 
 dependencies {
     implementation(project(":codegen-core"))
-    implementation(project(":codegen-client"))
     implementation(project(":codegen-server"))
     implementation("software.amazon.smithy:smithy-aws-traits:$smithyVersion")
     implementation("software.amazon.smithy:smithy-protocol-test-traits:$smithyVersion")