Remove "exported" ninja variables

There was infrastructure to export ninja variables to bazel. Now that
the bazel migration is cancelled, we don't need it anymore.

Bug: 315353489
Test: m nothing
Change-Id: I298cc2ac7ebd004557be3b30d75f7357cab0b7a0
diff --git a/cc/config/x86_linux_bionic_host.go b/cc/config/x86_linux_bionic_host.go
index 99d4ebb..515cb21 100644
--- a/cc/config/x86_linux_bionic_host.go
+++ b/cc/config/x86_linux_bionic_host.go
@@ -16,6 +16,7 @@
 
 import (
 	"android/soong/android"
+	"strings"
 )
 
 var (
@@ -72,13 +73,13 @@
 )
 
 func init() {
-	exportedVars.ExportStringListStaticVariable("LinuxBionicCflags", linuxBionicCflags)
-	exportedVars.ExportStringListStaticVariable("LinuxBionicLdflags", linuxBionicLdflags)
-	exportedVars.ExportStringListStaticVariable("LinuxBionicLldflags", linuxBionicLldflags)
+	pctx.StaticVariable("LinuxBionicCflags", strings.Join(linuxBionicCflags, " "))
+	pctx.StaticVariable("LinuxBionicLdflags", strings.Join(linuxBionicLdflags, " "))
+	pctx.StaticVariable("LinuxBionicLldflags", strings.Join(linuxBionicLldflags, " "))
 
 	// Use the device gcc toolchain for now
-	exportedVars.ExportStringStaticVariable("LinuxBionicGccVersion", x86_64GccVersion)
-	exportedVars.ExportSourcePathVariable("LinuxBionicGccRoot",
+	pctx.StaticVariable("LinuxBionicGccVersion", x86_64GccVersion)
+	pctx.SourcePathVariable("LinuxBionicGccRoot",
 		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${LinuxBionicGccVersion}")
 }