chore: remove sample portfolio module

src/settings.gradle

@@ -24,7 +24,7 @@ if (moduleRegistry.keySet().collect { it as String }.toSet() != expectedRootFiel
 if (!(moduleRegistry.modules instanceof List) || moduleRegistry.modules.isEmpty()) {
     throw new GradleException("Module registry has no modules: ${moduleRegistryFile}")
 }
-Set<String> expectedRuntimeCompositions = ['app-bootstrap', 'sample-portfolio'] as Set
+Set<String> expectedRuntimeCompositions = ['app-bootstrap'] as Set
 if (!(moduleRegistry.runtime_compositions instanceof List) ||
         moduleRegistry.runtime_compositions.collect { it as String }.toSet() !=
                 expectedRuntimeCompositions ||
@@ -34,7 +34,7 @@ if (!(moduleRegistry.runtime_compositions instanceof List) ||
                     moduleRegistryFile)
 }
 
-int expectedModuleCount = 19
+int expectedModuleCount = 18
 if (moduleRegistry.modules.size() != expectedModuleCount) {
     throw new GradleException(
             "Module registry must contain exactly ${expectedModuleCount} modules, " +
@@ -167,7 +167,7 @@ validatedModules.each { module ->
         if (module.id != 'sample-portfolio' && dependencyId == 'sample-portfolio') {
             throw new GradleException(
                     "Production module registry entry '${module.id}' must not allow a dependency on " +
-                            "'sample-portfolio'.")
+                            "deleted 'sample-portfolio' (negative re-entry guard).")
         }
         if (!moduleIds.contains(dependencyId)) {
             throw new GradleException(