Update comments for pack/unpack tests [ci skip]

More comprehensive pack/unpack tests are in test_pack.rb.

Author: nobu

test/ruby/test_array.rb

@@ -1309,32 +1309,7 @@ def test_pack
     assert_equal(ary.join(':'), ary2.join(':'))
     assert_not_nil(x =~ /def/)
 
-=begin
-    skipping "Not tested:
-        D,d & double-precision float, native format\\
-        E & double-precision float, little-endian byte order\\
-        e & single-precision float, little-endian byte order\\
-        F,f & single-precision float, native format\\
-        G & double-precision float, network (big-endian) byte order\\
-        g & single-precision float, network (big-endian) byte order\\
-        I & unsigned integer\\
-        i & integer\\
-        L & unsigned long\\
-        l & long\\
-
-        N & long, network (big-endian) byte order\\
-        n & short, network (big-endian) byte-order\\
-        P & pointer to a structure (fixed-length string)\\
-        p & pointer to a null-terminated string\\
-        S & unsigned short\\
-        s & short\\
-        V & long, little-endian byte order\\
-        v & short, little-endian byte order\\
-        X & back up a byte\\
-        x & null byte\\
-        Z & ASCII string (null padded, count is width)\\
-"
-=end
+    # more comprehensive tests are in test_pack.rb
   end
 
   def test_pack_with_buffer

test/ruby/test_string.rb

@@ -2469,31 +2469,7 @@ def test_unpack
 
     assert_equal([0xa9, 0x42, 0x2260], S("\xc2\xa9B\xe2\x89\xa0").unpack(S("U*")))
 
-=begin
-    skipping "Not tested:
-        D,d & double-precision float, native format\\
-        E & double-precision float, little-endian byte order\\
-        e & single-precision float, little-endian byte order\\
-        F,f & single-precision float, native format\\
-        G & double-precision float, network (big-endian) byte order\\
-        g & single-precision float, network (big-endian) byte order\\
-        I & unsigned integer\\
-        i & integer\\
-        L & unsigned long\\
-        l & long\\
-        m & string encoded in base64 (uuencoded)\\
-        N & long, network (big-endian) byte order\\
-        n & short, network (big-endian) byte-order\\
-        P & pointer to a structure (fixed-length string)\\
-        p & pointer to a null-terminated string\\
-        S & unsigned short\\
-        s & short\\
-        V & long, little-endian byte order\\
-        v & short, little-endian byte order\\
-        X & back up a byte\\
-        x & null byte\\
-        Z & ASCII string (null padded, count is width)\\"
-=end
+    # more comprehensive tests are in test_pack.rb
   end
 
   def test_upcase