chore(modules-sdk): Custom Module definition (#7315)

packages/medusa/src/utils/merge-modules-config.ts

@@ -1,7 +1,5 @@
 import { ConfigModule } from "@medusajs/types"
 
-import { ModulesDefinition } from "@medusajs/modules-sdk"
-
 /**
  * Merge the modules config from the medusa-config file with the modules config from medusa package
  * @param modules
@@ -24,12 +22,6 @@ export function mergeModulesConfig(
   for (const moduleName of allModulesKeys) {
     const internalModuleConfig = medusaInternalModulesConfig[moduleName]
 
-    const moduleDefinition = ModulesDefinition[moduleName]
-
-    if (moduleDefinition?.isLegacy) {
-      continue
-    }
-
     modules_[moduleName] ??= internalModuleConfig
   }