Completely remove the SwiftClangModuleInfo provider.

Tulsi has been updated to no longer depend on this.

RELNOTES: None.
PiperOrigin-RevId: 251224014

swift/internal/attrs.bzl

@@ -14,7 +14,6 @@
 
 """Common attributes used by multiple Swift build rules."""
 
-load(":legacy_swift_clang_module_info_aspect.bzl", "legacy_swift_clang_module_info_aspect")
 load(":providers.bzl", "SwiftInfo")
 
 def swift_common_rule_attrs(additional_deps_aspects = []):
@@ -30,7 +29,7 @@ binary or library, or other programs needed by it.
 """,
         ),
         "deps": attr.label_list(
-            aspects = [legacy_swift_clang_module_info_aspect] + additional_deps_aspects,
+            aspects = additional_deps_aspects,
             doc = """
 A list of targets that are dependencies of the target being built, which will be
 linked into that target. Allowed kinds of dependencies are:

swift/internal/providers.bzl

@@ -14,33 +14,6 @@
 
 """Defines Skylark providers that propagated by the Swift BUILD rules."""
 
-SwiftClangModuleInfo = provider(
-    doc = """
-Contains information about a Clang module with relative paths that needs to be propagated up to
-other Swift compilation/link actions.
-
-This provider is deprecated and will be removed in a future release.
-""",
-    fields = {
-        "transitive_compile_flags": """
-`Depset` of `string`s. The C compiler flags that should be passed to Clang when depending on this
-target (for example, header search paths).
-""",
-        "transitive_defines": """
-`Depset` of `string`s. The C preprocessor defines that should be passed to Clang when depending on
-this target.
-""",
-        "transitive_headers": """
-`Depset` of `File`s. The transitive header files that must be available to compile actions when
-depending on this target.
-""",
-        "transitive_modulemaps": """
-`Depset` of `File`s. The transitive module map files that will be passed to Clang using the
-`-fmodule-map-file` option.
-""",
-    },
-)
-
 SwiftInfo = provider(
     doc = """
 Contains information about the compiled artifacts of a Swift module.

swift/swift.bzl

@@ -24,7 +24,6 @@ load(
 )
 load(
     "@build_bazel_rules_swift//swift/internal:providers.bzl",
-    _SwiftClangModuleInfo = "SwiftClangModuleInfo",
     _SwiftInfo = "SwiftInfo",
     _SwiftProtoInfo = "SwiftProtoInfo",
     _SwiftToolchainInfo = "SwiftToolchainInfo",
@@ -65,7 +64,6 @@ load(
 )
 
 # Re-export providers.
-SwiftClangModuleInfo = _SwiftClangModuleInfo
 SwiftInfo = _SwiftInfo
 SwiftProtoInfo = _SwiftProtoInfo
 SwiftToolchainInfo = _SwiftToolchainInfo