Remove example with rsa crate interop

Author: djc

Cargo.lock

@@ -17,9 +17,3 @@ readme = "README.md"
 description = "Rust X.509 certificate generator"
 repository = "https://github.com/rustls/rcgen"
 keywords = ["mkcert", "ca", "certificate"]
-
-# This greatly speeds up rsa key generation times
-# (only applies to the dev-dependency of rcgen because cargo
-# ignores profile overrides for non leaf packages)
-[profile.dev.package.num-bigint-dig]
-opt-level = 3

Cargo.toml

@@ -9,10 +9,6 @@ license.workspace = true
 edition.workspace = true
 keywords.workspace = true
 
-[[example]]
-name = "rsa-irc"
-required-features = ["pem"]
-
 [[example]]
 name = "rsa-irc-openssl"
 required-features = ["pem"]
@@ -59,5 +55,4 @@ x509-parser = { workspace = true, features = ["verify"] }
 rustls-webpki = { version = "0.102", features = ["std"] }
 botan = { version = "0.11", features = ["vendored"] }
 rand = { workspace = true }
-rsa = "0.9"
 ring = { workspace = true }