lua: remove unsupported tonumber64() test cases

Follow up 15a9af26

test/box/misc.result

@@ -704,10 +704,6 @@ tonumber64(ffi.new('int', 10))
 ---
 - 10
 ...
-tonumber64(ffi.new('long ', 10))
----
-- 10
-...
 tonumber64(ffi.new('int8_t', 10))
 ---
 - 10
@@ -793,10 +789,6 @@ tonumber64(ffi.new('int', 10), 2)
 ---
 - error: 'bad argument #1 to ''?'' (string expected)'
 ...
-tonumber64(ffi.new('long ', 10), 2)
----
-- error: 'bad argument #1 to ''?'' (string expected)'
-...
 tonumber64(ffi.new('int8_t', 10), 2)
 ---
 - error: 'bad argument #1 to ''?'' (string expected)'

test/box/misc.test.lua

@@ -190,7 +190,6 @@ tonumber64(-100LL, 10)
 tonumber64(ffi.new('char', 10))
 tonumber64(ffi.new('short', 10))
 tonumber64(ffi.new('int', 10))
-tonumber64(ffi.new('long ', 10))
 tonumber64(ffi.new('int8_t', 10))
 tonumber64(ffi.new('int16_t', 10))
 tonumber64(ffi.new('int32_t', 10))
@@ -214,7 +213,6 @@ tonumber64(100ULL, 2)
 tonumber64(ffi.new('char', 10), 2)
 tonumber64(ffi.new('short', 10), 2)
 tonumber64(ffi.new('int', 10), 2)
-tonumber64(ffi.new('long ', 10), 2)
 tonumber64(ffi.new('int8_t', 10), 2)
 tonumber64(ffi.new('int16_t', 10), 2)
 tonumber64(ffi.new('int32_t', 10), 2)