Revert Rust config for 32-bit Linux CI/CQ bots

The recipe does not configure cargo for the cross-compile, so this
naturally did not work.

Change-Id: If944eae9492aa7b7a72a780f3ff477e63c26b588
Bug: 42290446
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/81047
Commit-Queue: Lily Chen <chlily@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Auto-Submit: Lily Chen <chlily@google.com>
diff --git a/infra/config/generated/cr-buildbucket.cfg b/infra/config/generated/cr-buildbucket.cfg
index 49462ac..4d45b11 100644
--- a/infra/config/generated/cr-buildbucket.cfg
+++ b/infra/config/generated/cr-buildbucket.cfg
@@ -538,11 +538,9 @@
         '    "CMAKE_CXX_FLAGS": "-m32 -msse2",'
         '    "CMAKE_C_FLAGS": "-m32 -msse2",'
         '    "CMAKE_SYSTEM_NAME": "Linux",'
-        '    "CMAKE_SYSTEM_PROCESSOR": "x86",'
-        '    "RUST_BINDINGS": "i686-unknown-linux-gnu"'
+        '    "CMAKE_SYSTEM_PROCESSOR": "x86"'
         '  },'
-        '  "recipe": "boringssl",'
-        '  "rust": true'
+        '  "recipe": "boringssl"'
         '}'
       execution_timeout_secs: 1800
       caches {
@@ -2790,11 +2788,9 @@
         '    "CMAKE_CXX_FLAGS": "-m32 -msse2",'
         '    "CMAKE_C_FLAGS": "-m32 -msse2",'
         '    "CMAKE_SYSTEM_NAME": "Linux",'
-        '    "CMAKE_SYSTEM_PROCESSOR": "x86",'
-        '    "RUST_BINDINGS": "i686-unknown-linux-gnu"'
+        '    "CMAKE_SYSTEM_PROCESSOR": "x86"'
         '  },'
-        '  "recipe": "boringssl",'
-        '  "rust": true'
+        '  "recipe": "boringssl"'
         '}'
       execution_timeout_secs: 1800
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
diff --git a/infra/config/main.star b/infra/config/main.star
index 570837a..a4167b5 100755
--- a/infra/config/main.star
+++ b/infra/config/main.star
@@ -589,10 +589,7 @@
             "CMAKE_ASM_FLAGS": "-m32 -msse2",
             "CMAKE_CXX_FLAGS": "-m32 -msse2",
             "CMAKE_C_FLAGS": "-m32 -msse2",
-            "RUST_BINDINGS": "i686-unknown-linux-gnu",
         },
-        # Also build and test the Rust code.
-        "rust": True,
     },
 )
 both_builders(