"Unnecessary inconvenience" refers to a situation or problem that causes unnecessary trouble or annoyance that could have been easily avoided. Full definition
Your delirium regarding a your debonair wisdom is a bit unsettling and leads many down a path of unnecessary inconveniences. (religion.blogs.cnn.com)
However, I don't want to cause any unnecessary inconvenience by posting an essay with a word count of about 7,000. (redeeminggod.com)
Binley said the Tory leader had treated his backbenchers like an «unnecessary inconvenience» on issues like Europe, gay marriage and Lords» reform. (politics.co.uk)