Use abseil logging in allocd_utils

This was missed in google#1955 .

Changing the log header additionally caused a new unrelated error, which
is also fixed:
```
In file included from allocd/alloc_utils.cpp:16:
allocd/alloc_utils.h:28:10: error: module //allocd:alloc_utils does not depend on a module exporting 'cuttlefish/common/libs/fs/shared_fd.h'
   28 | #include "cuttlefish/common/libs/fs/shared_fd.h"
      |          ^
1 error generated.
```

Bug: b/321795781

Author: Databean

base/cvd/allocd/BUILD.bazel

@@ -11,10 +11,9 @@ cc_library(
         "alloc_utils.h",
     ],
     deps = [
-        "//cuttlefish/common/libs/fs",
         "//cuttlefish/host/commands/cvd/utils:common",
         "//cuttlefish/host/libs/config:logging",
-        "//libbase",
+        "@abseil-cpp//absl/log",
         "@abseil-cpp//absl/strings:str_format",
     ],
 )

base/cvd/allocd/alloc_utils.cpp

@@ -19,7 +19,7 @@
 #include <fstream>
 #include <string_view>
 
-#include "android-base/logging.h"
+#include "absl/log/log.h"
 #include "absl/strings/str_format.h"
 
 #include "cuttlefish/host/commands/cvd/utils/common.h"

base/cvd/allocd/alloc_utils.h

@@ -25,8 +25,6 @@
 #include <sstream>
 #include <string_view>
 
-#include "cuttlefish/common/libs/fs/shared_fd.h"
-
 namespace cuttlefish {
 
 constexpr char kEbtablesName[] = "ebtables";