Revert "Added the expression matrix generating code"
Revert "Added the expression matrix generating code"

This reverts commit c954e3232d9e803a24d4172d060a3fd8e4108fa9.

kbaseapps/kb_STAR,kbaseapps/kb_STAR,kbaseapps/kb_STAR,kbaseapps/kb_STAR,kbaseapps/kb_STAR,kbaseapps/kb_STAR,kbaseapps/kb_STAR