chore: Remove unused prompt_manager.py file (#1229)

Co-authored-by: Tapan Chugh <tapanc@cs.washington.edu>

src/mcp/server/fastmcp/prompts/prompt_manager.py

@@ -1,33 +0,0 @@
-"""Prompt management functionality."""
-
-from mcp.server.fastmcp.prompts.base import Prompt
-from mcp.server.fastmcp.utilities.logging import get_logger
-
-logger = get_logger(__name__)
-
-
-class PromptManager:
-    """Manages FastMCP prompts."""
-
-    def __init__(self, warn_on_duplicate_prompts: bool = True):
-        self._prompts: dict[str, Prompt] = {}
-        self.warn_on_duplicate_prompts = warn_on_duplicate_prompts
-
-    def add_prompt(self, prompt: Prompt) -> Prompt:
-        """Add a prompt to the manager."""
-        logger.debug(f"Adding prompt: {prompt.name}")
-        existing = self._prompts.get(prompt.name)
-        if existing:
-            if self.warn_on_duplicate_prompts:
-                logger.warning(f"Prompt already exists: {prompt.name}")
-            return existing
-        self._prompts[prompt.name] = prompt
-        return prompt
-
-    def get_prompt(self, name: str) -> Prompt | None:
-        """Get prompt by name."""
-        return self._prompts.get(name)
-
-    def list_prompts(self) -> list[Prompt]:
-        """List all registered prompts."""
-        return list(self._prompts.values())