Fix #1241: nixpack plan generates an invalid toml file for python pro…

…jects containing a .tool-versions file.

I assume that outputting those lines before the toml or json file is not intended. If it is then please ignore this commit.

Another option might be to print these messages to stderr instead?

src/providers/python.rs

@@ -86,7 +86,6 @@ impl Provider for PythonProvider {
                 if let Some(poetry_version) =
                     PythonProvider::parse_tool_versions_poetry_version(file_content)?
                 {
-                    println!("Using poetry version from .tool-versions: {poetry_version}");
                     version = poetry_version;
                 }
             }
@@ -114,7 +113,6 @@ impl Provider for PythonProvider {
                 if let Some(uv_version) =
                     PythonProvider::parse_tool_versions_uv_version(file_content)?
                 {
-                    println!("Using uv version from .tool-versions: {uv_version}");
                     version = uv_version;
                 }
             }