remove msrv-related thing

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

.github/workflows/build.yml

@@ -89,27 +89,6 @@ jobs:
           command: build
           args: --no-default-features --features alloc --target thumbv6m-none-eabi
 
-  build-msrv:
-    name: Build MSRV
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout Sources
-        uses: actions/checkout@v2
-
-      - name: Install Rust Toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: 1.36.0
-          override: true
-
-      - name: Build
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --no-default-features --features 'alloc, serde'
-
   coverage:
     name: Code Coverage
     runs-on: ubuntu-latest

README.md

@@ -3,7 +3,6 @@
 [![ga-svg]][ga-url]
 [![crates-svg]][crates-url]
 [![docs-svg]][docs-url]
-[![msrv-svg]][msrv-url]
 [![codecov-svg]][codecov-url]
 [![deps-svg]][deps-url]
 
@@ -13,8 +12,6 @@
 [crates-url]: https://crates.io/crates/hex
 [docs-svg]: https://docs.rs/hex/badge.svg
 [docs-url]: https://docs.rs/hex
-[msrv-svg]: https://img.shields.io/badge/rustc-1.36+-blue.svg
-[msrv-url]: https://blog.rust-lang.org/2019/07/04/Rust-1.36.0.html
 [codecov-svg]: https://img.shields.io/codecov/c/github/KokaKiwi/rust-hex
 [codecov-url]: https://codecov.io/gh/KokaKiwi/rust-hex
 [deps-svg]: https://deps.rs/repo/github/KokaKiwi/rust-hex/status.svg