Replace `crubit/common/check.h` with `absl/log/...`.

- `CRUBIT_CHECK` becomes `CHECK`, or `LOG(FATAL)`, (or `CHECK_LE`, etc.)
- `CRUBIT_DIE_IF_NULL` becomes `ABSL_DIE_IF_NULL`

PiperOrigin-RevId: 470239907
diff --git a/nullability_verification/BUILD b/nullability_verification/BUILD
index 3ebbdbd..3dce169 100644
--- a/nullability_verification/BUILD
+++ b/nullability_verification/BUILD
@@ -17,7 +17,7 @@
     deps = [
         ":pointer_nullability",
         ":pointer_nullability_matchers",
-        "//common:check",
+        "@absl//absl/log:check",
         "@llvm-project//clang:analysis",
         "@llvm-project//clang:ast",
         "@llvm-project//clang:ast_matchers",
diff --git a/nullability_verification/pointer_nullability_analysis.cc b/nullability_verification/pointer_nullability_analysis.cc
index 773d3c6..83136b4 100644
--- a/nullability_verification/pointer_nullability_analysis.cc
+++ b/nullability_verification/pointer_nullability_analysis.cc
@@ -6,7 +6,7 @@
 
 #include <string>
 
-#include "common/check.h"
+#include "absl/log/check.h"
 #include "nullability_verification/pointer_nullability.h"
 #include "nullability_verification/pointer_nullability_matchers.h"
 #include "clang/AST/ASTContext.h"