The Supreme Judicial Court ruled today that developer-written condo-trust provisions that make it impossible to sue the developer for construction-related problems are illegal.  The ruling means that the condo board of the 42-unit Cambridge Point complex at 2440 Massachusetts Ave. in North Cambridge can proceed with a lawsuit against the company that put up the buildings. The trust is seeking at least $2 million to pay for repairs it says are needed because of shoddy construction by East Coast Developments of Woburn.    Read the article……………..