Delete ApiBp2build soong_build mode

This feature is obsolete.

This makes a large number of codepaths "dead code" (such as
module-specific implementations of ApiBp2build functionality). These
will be deleted in a followup CL.

Bug: 284029211
Test: Presubmits
Change-Id: Ib53b99f1fe8c24380d219caf44e9bb3b96724fa0

bp2build/cc_library_headers_conversion_test.go

@@ -123,69 +123,6 @@ cc_library_headers {
 	})
 }
 
-func TestCcApiHeaders(t *testing.T) {
-	fs := map[string]string{
-		"bar/Android.bp": `cc_library_headers { name: "bar_headers", }`,
-	}
-	bp := `
-	cc_library_headers {
-		name: "foo_headers",
-		export_include_dirs: ["dir1", "dir2"],
-		export_header_lib_headers: ["bar_headers"],
-
-		arch: {
-			arm: {
-				export_include_dirs: ["dir_arm"],
-			},
-			x86: {
-				export_include_dirs: ["dir_x86"],
-			},
-		},
-
-		target: {
-			android: {
-				export_include_dirs: ["dir1", "dir_android"],
-			},
-			windows: {
-				export_include_dirs: ["dir_windows"],
-			},
-		}
-	}
-	`
-	expectedBazelTargets := []string{
-		MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution.arm", AttrNameToString{
-			"export_includes": `["dir_arm"]`,
-			"arch":            `"arm"`,
-		}),
-		MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution.x86", AttrNameToString{
-			"export_includes": `["dir_x86"]`,
-			"arch":            `"x86"`,
-		}),
-		MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution.androidos", AttrNameToString{
-			"export_includes": `["dir_android"]`, // common includes are deduped
-		}),
-		// Windows headers are not exported
-		MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution", AttrNameToString{
-			"export_includes": `[
-        "dir1",
-        "dir2",
-    ]`,
-			"deps": `[
-        "//bar:bar_headers.contribution",
-        ":foo_headers.contribution.arm",
-        ":foo_headers.contribution.x86",
-        ":foo_headers.contribution.androidos",
-    ]`,
-		}),
-	}
-	RunApiBp2BuildTestCase(t, cc.RegisterLibraryHeadersBuildComponents, Bp2buildTestCase{
-		Blueprint:            bp,
-		Description:          "Header library contributions to API surfaces",
-		ExpectedBazelTargets: expectedBazelTargets,
-		Filesystem:           fs,
-	})
-}
-
 // header_libs has "variant_prepend" tag. In bp2build output,
 // variant info(select) should go before general info.
 func TestCcLibraryHeadersOsSpecificHeader(t *testing.T) {