allow rows to be removed based on given values

[patrick-troy]

Allow rows of data to be removed from specific datasets given a table_name, header and value.

• The table_name identifies which table to apply this to
• The header identifies which column to check against
• The value is the value that needs to match the cell value for that row to be kept
  Currently only works with one table, header and value combination per pipeline

Outputs a new error code to identify which row of the original data has been removed