remove langchain-core pin to resolve dependency conflict

Author: Salman Mohammed

plugins/communication_protocols/mcp/pyproject.toml

@@ -17,7 +17,6 @@ dependencies = [
     "utcp>=1.0",
     "mcp-use>=1.3",
     "langchain==0.3.27",
-    "langchain-core==0.3.27"
 ]
 classifiers = [
     "Development Status :: 4 - Beta",