Array#nitems() has been removed from 1.9.

Signed-off-by: Ted Reed <ted.reed@gmail.com>

Rakefile

@@ -296,7 +296,6 @@ namespace :test do |ns|
         test "array/intersection.t"
         test "array/join.t"
         test "array/mathop.t"
-        test "array/nitems.t"
         test "array/pop.t"
         test "array/push.t"
         test "array/reject.t"
@@ -311,7 +310,7 @@ namespace :test do |ns|
         test "array/warray.t"
 
         desc "Run tests on Array."
-        task :all => [:array, :assign, :at, :clear, :collect, :compact, :concat, :delete, :empty, :equals, :fetch, :fill, :first, :flatten, :grep, :include, :index, :insert, :intersection, :join, :mathop, :nitems, :pop, :push, :reject, :replace, :reverse, :shift, :slice, :sort, :to_s, :uniq, :values_at, :warray]
+        task :all => [:array, :assign, :at, :clear, :collect, :compact, :concat, :delete, :empty, :equals, :fetch, :fill, :first, :flatten, :grep, :include, :index, :insert, :intersection, :join, :mathop, :pop, :push, :reject, :replace, :reverse, :shift, :slice, :sort, :to_s, :uniq, :values_at, :warray]
     end
 
     namespace :file do 

src/classes/Array.pir

@@ -1640,22 +1640,6 @@ The zip operator.
 # TODO: pass warning
 .end
 
-.sub 'nitems' :method
-    .local int count
-    .local pmc it
-    count = 0
-    it = iter self
-  iter_loop:
-    unless it goto done
-    $P0 = shift it
-    $I0 = isa $P0, "NilClass"
-    if $I0 goto iter_loop
-    inc count
-    goto iter_loop
-  done:
-    .return ( count )
-.end
-
 .sub '_cmp' :vtable('cmp') :method
     .param pmc other
     .local int i, len, result