Remove publish-lockfile key from manifest.

The feature was stabilized without the key in #7026 about 1.5 years ago.
(Will follow up with an error message in a subsequent commit.)

Author: ehuss

src/cargo/core/manifest.rs

@@ -39,7 +39,6 @@ pub struct Manifest {
     custom_metadata: Option<toml::Value>,
     profiles: Option<TomlProfiles>,
     publish: Option<Vec<String>>,
-    publish_lockfile: bool,
     replace: Vec<(PackageIdSpec, Dependency)>,
     patch: HashMap<Url, Vec<Dependency>>,
     workspace: WorkspaceConfig,
@@ -374,7 +373,6 @@ impl Manifest {
         custom_metadata: Option<toml::Value>,
         profiles: Option<TomlProfiles>,
         publish: Option<Vec<String>>,
-        publish_lockfile: bool,
         replace: Vec<(PackageIdSpec, Dependency)>,
         patch: HashMap<Url, Vec<Dependency>>,
         workspace: WorkspaceConfig,
@@ -407,7 +405,6 @@ impl Manifest {
             original,
             im_a_teapot,
             default_run,
-            publish_lockfile,
             metabuild,
             resolve_behavior,
         }

src/cargo/util/toml/mod.rs

@@ -825,7 +825,6 @@ pub struct TomlProject {
     exclude: Option<Vec<String>>,
     include: Option<Vec<String>>,
     publish: Option<VecStringOrBool>,
-    publish_lockfile: Option<bool>,
     workspace: Option<String>,
     im_a_teapot: Option<bool>,
     autobins: Option<bool>,
@@ -1304,19 +1303,6 @@ impl TomlManifest {
             None | Some(VecStringOrBool::Bool(true)) => None,
         };
 
-        let publish_lockfile = match project.publish_lockfile {
-            Some(b) => {
-                features.require(Feature::publish_lockfile())?;
-                warnings.push(
-                    "The `publish-lockfile` feature is deprecated and currently \
-                     has no effect. It may be removed in a future version."
-                        .to_string(),
-                );
-                b
-            }
-            None => features.is_enabled(Feature::publish_lockfile()),
-        };
-
         if summary.features().contains_key("default-features") {
             warnings.push(
                 "`default-features = [\"..\"]` was found in [features]. \
@@ -1348,7 +1334,6 @@ impl TomlManifest {
             custom_metadata,
             profiles,
             publish,
-            publish_lockfile,
             replace,
             patch,
             workspace_config,

tests/testsuite/publish_lockfile.rs

@@ -52,8 +52,6 @@ fn deprecated() {
             "\
 [PACKAGING] foo v0.1.0 ([..])
 [VERIFYING] foo v0.1.0 ([..])
-[WARNING] The `publish-lockfile` feature is deprecated and currently has no effect. \
-    It may be removed in a future version.
 [COMPILING] foo v0.1.0 ([..])
 [FINISHED] dev [..]
 ",