NEW YORK (Reuters) - Pfizer Inc (PFE.N) is abandoning research to find new drugs aimed at treating Alzheimer’s and Parkinson’s disease, the U.S. pharmaceutical company announced on Saturday. The company said it expects to eliminate 300 positions from the neuroscience discovery and early development programs in Andover and Cambridge, Massachusetts, and Groton, Connecticut, as it redistributes the money spent on research, according to the emailed statement.