Clean up GcdUnit flow.

.gitignore

GcdUnit/design/cadence-innovus-flowsetup/README.md

GcdUnit/design/cadence-innovus-flowsetup/configure.yml

.../innovus-foundation-flow/custom-scripts/always-source.tcl

...p/innovus-foundation-flow/custom-scripts/embed-return.tcl

...innovus-foundation-flow/custom-scripts/restore-design.tcl

...etup/innovus-foundation-flow/custom-scripts/run-debug.tcl

...up/innovus-foundation-flow/custom-scripts/save-design.tcl

.../innovus-foundation-flow/custom-scripts/setup-session.tcl

...tup/innovus-foundation-flow/custom-scripts/stream-out.tcl

...innovus-foundation-flow/custom-scripts/summary-report.tcl

GcdUnit/design/cadence-innovus-flowsetup/run.sh

...nit/design/cadence-innovus-flowsetup/scripts/post_cts.tcl

...it/design/cadence-innovus-flowsetup/scripts/post_init.tcl

...t/design/cadence-innovus-flowsetup/scripts/post_place.tcl

...gn/cadence-innovus-flowsetup/scripts/post_postctshold.tcl

...sign/cadence-innovus-flowsetup/scripts/post_postroute.tcl

...t/design/cadence-innovus-flowsetup/scripts/post_route.tcl

...design/cadence-innovus-flowsetup/scripts/post_signoff.tcl

GcdUnit/design/cadence-innovus-flowsetup/scripts/pre_cts.tcl