sm2: can't easily test for other targets because of getrandom backends

wasm requires a feature flag explicitely for wasm and a rustcfg flag

Thumbv7 doesn't have off-the-shelf backend for getrandom

.github/workflows/sm2.yml

@@ -19,28 +19,6 @@ env:
   RUSTDOCFLAGS: "-Dwarnings"
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - 1.85.0 # MSRV
-          - stable
-        target:
-          - thumbv7em-none-eabi
-          - wasm32-unknown-unknown
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: ${{ matrix.rust }}
-          targets: ${{ matrix.target }}
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features arithmetic
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pkcs8
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc,arithmetic,pkcs8
-
   test:
     runs-on: ubuntu-latest
     strategy:

sm2/README.md

@@ -35,10 +35,6 @@ The SM2 cryptosystem is composed of three distinct algorithms:
 - [ ] **SM2KEP**: key exchange protocol defined in [GBT.32918.3-2016] (SM2-3)
 - [x] **SM2PKE**: public key encryption algorithm defined in [GBT.32918.4-2016] (SM2-4)
 
-## SemVer Policy
-
-- All on-by-default features of this library are covered by SemVer
-
 ## License
 
 All crates licensed under either of