linux: drop dead process field column DIRTY

The field for dirty pages in /proc/[pid]/statm is always 0 since Linux
2.6 (see man:proc(5)).

1 files changed, 0 insertions, 3 deletions

diff --git a/htop.1.in b/htop.1.in
index 8b3544a9..ceec2165 100644
--- a/htop.1.in
+++ b/htop.1.in
@@ -392,9 +392,6 @@ except the process's executable instructions).
 .B M_LRS (LIB)
 The library size of the process.
 .TP
-.B M_DT (DIRTY)
-The size of the dirty pages of the process.
-.TP
 .B M_SWAP (SWAP)
 The size of the process's swapped pages.
 .TP