Rust: clean up QLDB from Cargo Workspace members (#7662)

* fix: clean up QLDB from Cargo Workspace members

* chore: bump Rust version to 1.88.0

Author: toof-jp

.github/workflows/lint-rust.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         if: steps.changed-files.outputs.any_changed == 'true'
         with:
-          toolchain: "1.87.0"
+          toolchain: "1.88.0"
           components: clippy, rustfmt
       - name: Set Environment
         if: steps.changed-files.outputs.any_changed == 'true'

rustv1/examples/Cargo.toml

@@ -42,7 +42,6 @@ members = [
     "medialive",
     "mediapackage",
     "polly",
-    "qldb",
     "rds",
     "rdsdata",
     "route53",