Fix Linux build: Make the nasm feature a no-op (#7675)

### What
* Circumvent #7671

### Checklist
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Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
* Using examples from latest `main` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/7675?manifest_url=https://app.rerun.io/version/main/examples_manifest.json)
* Using full set of examples from `nightly` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/7675?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
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usefulness for the next release's CHANGELOG
* [x] If applicable, add a new check to the [release
checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!
* [x] If have noted any breaking changes to the log API in
`CHANGELOG.md` and the migration guide

- [PR Build Summary](https://build.rerun.io/pr/7675)
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

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Author: emilk

crates/store/re_video/Cargo.toml

@@ -31,7 +31,9 @@ av1 = ["dep:dav1d"]
 
 ## Enable faster native video decoding with assembly.
 ## You need to install [nasm](https://nasm.us/) to compile with this feature.
-nasm = ["dav1d?/default"] # The default feature set of dav1d has asm enabled
+# TODO(#7671): this feature flag currently does nothing
+# nasm = ["dav1d?/default"] # The default feature set of dav1d has asm enabled
+nasm = [] ## TODO(#7671): fix Linux build
 
 [dependencies]
 re_log.workspace = true

crates/store/re_video/src/decode/av1.rs

@@ -16,7 +16,9 @@ impl SyncDav1dDecoder {
     pub fn new() -> Result<Self> {
         re_tracing::profile_function!();
 
-        if !cfg!(feature = "nasm") {
+        // TODO(#7671): enable this warning again when the `nasm` feature actually does something
+        #[allow(clippy::overly_complex_bool_expr)]
+        if false && !cfg!(feature = "nasm") {
             re_log::warn_once!(
                 "NOTE: native AV1 video decoder is running extra slowly. \
                 Speed it up by compiling Rerun with the `nasm` feature enabled. \

crates/top/rerun-cli/Cargo.toml

@@ -43,6 +43,7 @@ default = ["native_viewer", "web_viewer"]
 
 ## Enable faster native video decoding with assembly.
 ## You need to install [nasm](https://nasm.us/) to compile with this feature.
+# TODO(#7671): this feature flag currently does nothing
 nasm = ["rerun/nasm"]
 
 ## Support spawning a native viewer.

crates/top/rerun/Cargo.toml

@@ -73,6 +73,7 @@ log = ["dep:env_logger", "dep:log"]
 
 ## Enable faster native video decoding with assembly.
 ## You need to install [nasm](https://nasm.us/) to compile with this feature.
+# TODO(#7671): this feature flag currently does nothing
 nasm = ["re_video/nasm"]
 
 ## Support spawning a native viewer.

rerun_py/Cargo.toml

@@ -30,6 +30,7 @@ extension-module = ["pyo3/extension-module"]
 
 ## Enable faster native video decoding with assembly.
 ## You need to install [nasm](https://nasm.us/) to compile with this feature.
+# TODO(#7671): this feature flag currently does nothing
 nasm = ["re_video/nasm"]
 
 ## Support serving a web viewer over HTTP with `serve()`.