The problem is that you should not have cut off those leaves. The two 'pedal-like' leaves were the cotyledons that supply the nutrients for the plant to grow for the first several weeks. Now that you have removed them, the plant will need to pull it's nutrients from the media it is growing in.

As a rule of thumb, do not remove leaves unless they are DEAD or highly damaged.

Fill out the troubleshooting form at the top of the Plant Problems forum.