A summit of Latin American countries to discuss a united front in the face of US President Donald Trump’s plans for mass migrant deportations has been called off, the organizers said Wednesday.Honduras had called an urgent meeting of the Community of Latin American and Caribbean States (CELAC) for Thursday to discuss migration after a blazing row between Colombia and the United States over Bogota’s refusal to accept two US military deportation flights.But the Honduras government on Wednesday cancelled the meeting after no leaders apart from Colombian President Gustavo Petro announced they…