examples/rust: Don't specify minimum Rust version for examples

It's not actually clear that specifying the minimum supported Rust
version is something we should do in these examples. Dependencies should
carry their own requirements and these examples by now should build on
the majority of Rust versions out there, as they don't use any advanced
features and 1.71, even assuming that it is accurate [which it may not
be], is fairly "old" at this point.
As such, the specified minimum Rust version is more of a maintenance
burden, as it can clash with *higher* requirements caused by
dependencies (see #342 as an example). Remove it.

Signed-off-by: Daniel Müller <[email protected]>

Author: d-e-s-o

examples/rust/profile/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.1.0"
 authors = ["Kuifeng Lee <[email protected]>"]
 license = "GPL-2.0 OR BSD-3-Clause"
 edition = "2021"
-rust-version = "1.71"
 
 [dependencies]
 blazesym = { path = "../../../blazesym", features = ["tracing"] }

examples/rust/tracecon/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.1.0"
 authors = ["Magnus Kulke <[email protected]>"]
 edition = "2021"
 license = "GPL-2.0 OR BSD-3-Clause"
-rust-version = "1.71"
 
 [dependencies]
 anyhow = "1.0"

examples/rust/xdp/Cargo.toml

@@ -3,7 +3,6 @@ name = "xdp"
 version = "0.1.0"
 authors = ["Hengqi Chen <[email protected]>"]
 edition = "2021"
-rust-version = "1.71"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html