Give the rod of striking SPELL_MELEE. It's clobberin' time!

Note: a +9 rod with 27 Evoc recharges 0.52 mana per 10 aut, ie,
0.312 per 6 aut (a club and thus rod's mindelay).

Should be roughly balanced all the way from D:1 (but not as a starting
weapon) to endgame, although its usefulness depends on the character.
The sweet spot is 14 M&F 27 Evoc 0 Earth, where it beats all regular
competition.  For other builds, other top-end choices (dwhip, 2-handers,
enhancer staves) are a no-brainer, but having one niche where it shines
looks right.

Obviously, it's possible I'm on crack, so here are some numbers:
+9 dwhip {nothing}       21
+9 great mace {nothing}  23
+9 rod [charged]         32 (short fight)
+9 rod [empty]            8
-- sustained             15
staff of earth           34
staff of non-resisted    42

1 files changed, 0 insertions, 16 deletions

diff --git a/crawl-ref/source/zap-data.h b/crawl-ref/source/zap-data.h
index c0bca93dd6..6933b26715 100644
--- a/crawl-ref/source/zap-data.h
+++ b/crawl-ref/source/zap-data.h
@@ -519,22 +519,6 @@ struct zap_info
 },
 
 {
-    ZAP_STRIKING,
-    "concussive force",
-    50,
-    new dicedef_calculator<1, 8, 1, 5>,
-    new tohit_calculator<8, 1, 10>,
-    BLACK,
-    false,
-    BEAM_MMISSILE,
-    NUM_DCHAR_TYPES,
-    true,
-    false,
-    false,
-    4 // XXX: this is just a guess.
-},
-
-{
     ZAP_STONE_ARROW,
     "stone arrow",
     50,