Revert "fix: improve MCP service startup reliability"

This reverts commit d70362b9d4.

Dockerfile

@@ -3,12 +3,7 @@ FROM python:3.10-slim AS base
 
 WORKDIR /app
 
-# Install system dependencies
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends netcat-openbsd && \
-    rm -rf /var/lib/apt/lists/*
-
-# Install Python dependencies
+# Install dependencies
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt