docs: changelog for v8.0.0-rc1 (cosmos#1997)

Signed-off-by: Yaru Wang <[email protected]>

Signed-off-by: Yaru Wang <[email protected]>

CHANGELOG.md

@@ -52,16 +52,6 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (tests) [#1941](https://github.com/cosmos/gaia/pull/1941) Fix packet forward configuration for e2e tests.
 * (tests) Use gaiad to swap out [Ignite](https://github.com/ignite/cli) in [liveness tests](https://github.com/cosmos/gaia/blob/main/.github/workflows/test.yml).
 
-## [v7.1.0] -2022-10-14
-
-* (gaia) bump [cosmos-sdk](https://github.com/cosmos/cosmos-sdk) to [v0.45.9](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.9) to fix the security vulnerability! See [CHANGELOG.md](https://github.com/cosmos/cosmos-sdk/blob/v0.45.9/CHANGELOG.md) for details.
-
-## [v7.0.3] -2022-08-03
-* (gaia) update go to 1.18.
-* (gaia) bump [cosmos-sdk](https://github.com/cosmos/cosmos-sdk) to [v0.45.6](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.6). See [CHANGELOG.md](https://github.com/cosmos/cosmos-sdk/blob/v0.45.6/CHANGELOG.md) for details.
-* (gaia) bump [Liquidity](https://github.com/Gravity-Devs/liquidity) module to [v1.5.1](https://github.com/Gravity-Devs/liquidity/releases/tag/v1.5.1).
-* (gaia) bump [cosmos ledger](https://github.com/cosmos/ledger-go) to [v0.9.3](https://github.com/cosmos/ledger-go/releases/tag/v0.9.3) to fix issue [#1573](https://github.com/cosmos/gaia/issues/1573) - Ledger Nano S Plus not detected by gaiad.
-
 ## [v7.1.0] -2022-10-14
 * (gaia) bump [cosmos-sdk](https://github.com/cosmos/cosmos-sdk) to [v0.45.9](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.9) to fix the security vulnerability! See [CHANGELOG.md](https://github.com/cosmos/cosmos-sdk/blob/v0.45.9/CHANGELOG.md) for details.