Revert "Indraneel, Vikash | #1347 | Adding scheduled drug incase same scheduled drug is alredy present."

This reverts commit 8dc828f1874804254dd9c9209f4cf0a69738bc93.
Sravanthi, Bharti| #1320 Adjusting time for overlapping drug orders on same date
Sravanthi, Bharti| #1320 Scheduling time for overlapping drug orders
Sravanthi, Bharti| #1320 Checking conflicts of new order with existing and unsaved drug orders
Sravanthi, Bharti| #1320 Adding and subtracting milliseconds (instead of seconds) for overlapping orders
Bharti| Adding drugorder modal test to meet coverage
Bharti| #1320 Removing effectiveStartDate from drug order model