MIMParser: remove unused outer-scope variables redeclared in inner scope
MIMParser: remove unused outer-scope variables redeclared in inner scope

Those three were never used in the outer scope (i.e. that of the while
loop) so let's just keep the inner declarations from the "if TI field"
block.

james-monkeyshines/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,Ensembl/ensembl