Removing env and core from step2
Removing env and core from step2

Changed Env to Map. Need to define arithmetic
operators in step2 rather than core for this step.

foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal,foresterre/mal