Remove support for HPUX, which is discontinued and does not provide a c++17 complaint compiler.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit e98c9c2111)

src/part/localLister.cpp

@@ -81,26 +81,18 @@ namespace Filelight
       #endif /* !_POSIX_SOURCE && BSIZE */
    #else /* HAVE_STRUCT_STAT_ST_BLOCKS */
       /* Some systems, like Sequents, return st_blksize of 0 on pipes.
-         Also, when running `rsh hpux11-system cat any-file', cat would
-         determine that the output stream had an st_blksize of 2147421096.
          So here we arbitrarily limit the `optimal' block size to 4MB.
          If anyone knows of a system for which the legitimate value for
          st_blksize can exceed 4MB, please report it as a bug in this code.  */
       #define ST_BLKSIZE(statbuf) ((0 < (statbuf).st_blksize && (statbuf).st_blksize <= (1 << 22)) /* 4MiB */ ? (statbuf).st_blksize : DEV_BSIZE)
-      #if defined hpux || defined __hpux__ || defined __hpux
-         /* HP-UX counts st_blocks in 1024-byte units.
-            This loses when mixing HP-UX and BSD filesystems with NFS.  */
-         #define ST_NBLOCKSIZE 1024
-      #else /* !hpux */
-         #if defined _AIX && defined _I386
-            /* AIX PS/2 counts st_blocks in 4K units.  */
-            #define ST_NBLOCKSIZE (4 * 1024)
-         #else /* not AIX PS/2 */
-            #if defined _CRAY
-               #define ST_NBLOCKS(statbuf) (S_ISREG ((statbuf).st_mode) || S_ISDIR ((statbuf).st_mode) ? (statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE : 0)
-            #endif /* _CRAY */
-         #endif /* not AIX PS/2 */
-      #endif /* !hpux */
+      #if defined _AIX && defined _I386
+         /* AIX PS/2 counts st_blocks in 4K units.  */
+         #define ST_NBLOCKSIZE (4 * 1024)
+      #else /* not AIX PS/2 */
+         #if defined _CRAY
+            #define ST_NBLOCKS(statbuf) (S_ISREG ((statbuf).st_mode) || S_ISDIR ((statbuf).st_mode) ? (statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE : 0)
+         #endif /* _CRAY */
+      #endif /* not AIX PS/2 */
    #endif /* HAVE_STRUCT_STAT_ST_BLOCKS */
 
    #ifndef ST_NBLOCKS