remove glibs for android compilation

metadata_linux.go.patch

diff --git a/lib/inventory/metadata/metadata_linux.go b/lib/inventory/metadata/metadata_linux.go
index 9ef14d8ef4..a7b25d4304 100644
--- a/lib/inventory/metadata/metadata_linux.go
+++ b/lib/inventory/metadata/metadata_linux.go
@@ -19,44 +19,20 @@ limitations under the License.
 
 package metadata
 
-// #include <gnu/libc-version.h>
-import "C"
-
 import (
-	"fmt"
-	"strings"
+	"runtime"
+
+	log "github.com/sirupsen/logrus"
 )
 
-// fetchOSVersion combines the content of '/etc/os-release' to be e.g.
-// "ubuntu 22.04".
+// fetchOSVersion returns "" if not on linux and not on darwin.
 func (c *fetchConfig) fetchOSVersion() string {
-	filename := "/etc/os-release"
-	out, err := c.read(filename)
-	if err != nil {
-		return ""
-	}
-
-	id := "linux"
-	versionID := "(unknown)"
-	for _, line := range strings.Split(strings.TrimSpace(out), "\n") {
-		key, value, found := strings.Cut(line, "=")
-		if !found {
-			continue
-		}
-
-		switch key {
-		case "ID":
-			id = strings.Trim(value, `"`)
-		case "VERSION_ID":
-			versionID = strings.Trim(value, `"`)
-		}
-	}
-
-	return fmt.Sprintf("%s %s", id, versionID)
+	log.Warningf("fetchOSVersion is not implemented for %s", runtime.GOOS)
+	return ""
 }
 
-// fetchGlibcVersion returns the glibc version string as returned by
-// gnu_get_libc_version.
+// fetchGlibcVersion returns "" if not on linux and not on darwin.
 func (c *fetchConfig) fetchGlibcVersion() string {
-	return C.GoString(C.gnu_get_libc_version())
+	log.Warningf("fetchGlibcVersion is not implemented for %s", runtime.GOOS)
+	return ""
 }