Last Will givens: remove extra parentheses (#1837)

Extra because there is no change in order of operations

Author: VaiaPatta1985

exercises/concept/last-will/.meta/exemplar.rb

@@ -2,7 +2,7 @@
 class Zhang
   def self.bank_number_part(secret_modifier)
     zhang_part = 8_541
-    (zhang_part * secret_modifier) % 10_000
+    zhang_part * secret_modifier % 10_000
   end
 
   class Red
@@ -22,7 +22,7 @@ def self.code_fragment
 class Khan
   def self.bank_number_part(secret_modifier)
     khan_part = 4_142
-    (khan_part * secret_modifier) % 10_000
+    khan_part * secret_modifier % 10_000
   end
 
   class Red
@@ -42,7 +42,7 @@ def self.code_fragment
 class Garcia
   def self.bank_number_part(secret_modifier)
     garcia_part = 4_023
-    (garcia_part * secret_modifier) % 10_000
+    garcia_part * secret_modifier % 10_000
   end
 
   class Red

exercises/concept/last-will/last_will.rb

@@ -4,7 +4,7 @@
 class Zhang
   def self.bank_number_part(secret_modifier)
     zhang_part = 8_541
-    (zhang_part * secret_modifier) % 10_000
+    zhang_part * secret_modifier % 10_000
   end
 
   class Red
@@ -24,7 +24,7 @@ def self.code_fragment
 class Khan
   def self.bank_number_part(secret_modifier)
     khan_part = 4_142
-    (khan_part * secret_modifier) % 10_000
+    khan_part * secret_modifier % 10_000
   end
 
   class Red
@@ -44,7 +44,7 @@ def self.code_fragment
 class Garcia
   def self.bank_number_part(secret_modifier)
     garcia_part = 4_023
-    (garcia_part * secret_modifier) % 10_000
+    garcia_part * secret_modifier % 10_000
   end
 
   class Red