Update syntax slices

Author: D-system

.standard_todo.yml

@@ -9,7 +9,6 @@ ignore:
 - lib/csvlint/csvw/date_format.rb:
   - Lint/MixedRegexpCaptureTypes
 - lib/csvlint/csvw/number_format.rb:
-  - Style/SlicingWithRange
   - Style/IdenticalConditionalBranches
 - lib/csvlint/csvw/property_checker.rb:
   - Performance/InefficientHashSearch

lib/csvlint/csvw/number_format.rb

@@ -41,7 +41,7 @@ def initialize(pattern = nil, grouping_separator = nil, decimal_separator = ".",
 
           if ["+", "-"].include?(integer_part[0])
             numeric_part_regexp = "\\#{integer_part[0]}"
-            integer_part = integer_part[1..-1]
+            integer_part = integer_part[1..]
           else
             numeric_part_regexp = "[-+]?"
           end
@@ -52,7 +52,7 @@ def initialize(pattern = nil, grouping_separator = nil, decimal_separator = ".",
           min_exponent_digits = exponent_part.delete("#").length
           max_exponent_digits = exponent_part.length
 
-          integer_parts = integer_part.split(@grouping_separator)[1..-1]
+          integer_parts = integer_part.split(@grouping_separator)[1..]
           @primary_grouping_size = begin
             integer_parts[-1].length
           rescue