github: stop building and releasing i686-unknown-linux-gnu distributions

Download statistics show that these are rarely downloaded. We're talking
a few dozen downloads in total versus >100k for x86_64-unknown-linux-gnu.
The download statistics imply that ~nobody cares about these. So they
aren't worth the machine and human time to support.

I left the code in to support building them. I may rip out that code
later if nobody notices the downloads are gone.

Author: indygreg

.github/workflows/linux.yml

@@ -219,59 +219,6 @@ jobs:
             py: 'cpython-3.11'
             optimizations: 'lto'
 
-          # We don't publish noopt builds when PGO is available.
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.8'
-            optimizations: 'debug'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.8'
-            optimizations: 'lto'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.8'
-            optimizations: 'pgo'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.8'
-            optimizations: 'pgo+lto'
-
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.9'
-            optimizations: 'debug'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.9'
-            optimizations: 'lto'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.9'
-            optimizations: 'pgo'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.9'
-            optimizations: 'pgo+lto'
-
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.10'
-            optimizations: 'debug'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.10'
-            optimizations: 'lto'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.10'
-            optimizations: 'pgo'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.10'
-            optimizations: 'pgo+lto'
-
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.11'
-            optimizations: 'debug'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.11'
-            optimizations: 'lto'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.11'
-            optimizations: 'pgo'
-          - target_triple: 'i686-unknown-linux-gnu'
-            py: 'cpython-3.11'
-            optimizations: 'pgo+lto'
-
           # Cross-compiles can't do PGO and require Python 3.9.
           - target_triple: 'mips-unknown-linux-gnu'
             py: 'cpython-3.9'

src/release.rs

@@ -114,15 +114,6 @@ pub static RELEASE_TRIPLES: Lazy<BTreeMap<&'static str, TripleRelease>> = Lazy::
         },
     );
 
-    h.insert(
-        "i686-unknown-linux-gnu",
-        TripleRelease {
-            suffixes: linux_suffixes_pgo.clone(),
-            install_only_suffix: "pgo+lto",
-            python_version_requirement: None,
-        },
-    );
-
     h.insert(
         "x86_64-unknown-linux-gnu",
         TripleRelease {