chore: rm dead code

packages/opencode/src/provider/transform.ts

@@ -75,11 +75,9 @@ export namespace ProviderTransform {
     }
 
     if (
-      model.providerID === "deepseek" ||
-      model.api.id.toLowerCase().includes("deepseek") ||
-      (model.capabilities.interleaved &&
-        typeof model.capabilities.interleaved === "object" &&
-        model.capabilities.interleaved.field === "reasoning_content")
+      model.capabilities.interleaved &&
+      typeof model.capabilities.interleaved === "object" &&
+      model.capabilities.interleaved.field === "reasoning_content"
     ) {
       return msgs.map((msg) => {
         if (msg.role === "assistant" && Array.isArray(msg.content)) {