remove deprecated remove_prefix to clear era_info

[surajk-m]

This PR removes deprecated remove_prefix to clear era information in Staking Pallet. Issue #13439

[cla-bot-2021[bot]]

User @s5k0651, please sign the CLA here.

[stale[bot]]

Hey, is anyone still working on this? Due to the inactivity this issue has been automatically marked as stale. It will be closed if no further activity occurs. Thank you for your contributions.

[surajk-m]

@kianenigma, Please review the PR.

[stale[bot]]

Hey, is anyone still working on this? Due to the inactivity this issue has been automatically marked as stale. It will be closed if no further activity occurs. Thank you for your contributions.

[ggwpez]

bot fmt

[command-bot[bot]]

@ggwpez https://gitlab.parity.io/parity/mirrors/substrate/-/jobs/2832043 was started for your command "$PIPELINE_SCRIPTS_DIR/commands/fmt/fmt.sh". Check out https://gitlab.parity.io/parity/mirrors/substrate/-/pipelines?page=1&scope=all&username=group_605_bot to know what else is being executed currently.

Comment bot cancel 46-ef938d23-daab-448f-90d7-9f2ac53a2d32 to cancel this command or bot cancel to cancel all commands in this pull request.

[command-bot[bot]]

@ggwpez Command "$PIPELINE_SCRIPTS_DIR/commands/fmt/fmt.sh" has finished. Result: https://gitlab.parity.io/parity/mirrors/substrate/-/jobs/2832043 has finished. If any artifacts were generated, you can download them from https://gitlab.parity.io/parity/mirrors/substrate/-/jobs/2832043/artifacts/download.

[kianenigma]

bot rebase

[paritytech-processbot[bot]]

Rebased

[ggwpez]

bot merge

[paritytech-processbot[bot]]

Waiting for commit status.