Revert "Amend previous workaround for LibmeshPetscCall in #3984"

This reverts commit 08acd27.

Author: nmnobre

include/numerics/petsc_solver_exception.h

@@ -107,15 +107,6 @@ class PetscSolverException : public SolverException
 #define LIBMESH_CHKERRQ(ierr) CHKERRQ(ierr);
 #define LIBMESH_CHKERRA(comm, ierr) CHKERRABORT(comm, ierr);
 
-// Remove me: for backward compatibility with MOOSE only
-#define LibmeshPetscCall(...)                                           \
-  do                                                                    \
-  {                                                                     \
-    PetscErrorCode libmesh_petsc_call_ierr;                             \
-    libmesh_petsc_call_ierr = __VA_ARGS__;                              \
-    LIBMESH_CHKERRA(this->comm().get(), libmesh_petsc_call_ierr);       \
-  } while (0)
-
 #endif
 
 #define PETSC_BEGIN_END(Function)                                       \