Remove (now pointless) ConditionMatcher

src/spectator/matchers/condition_matcher.cr

@@ -1,9 +0,0 @@
-require "./matcher"
-
-module Spectator::Matchers
-  # Category of matcher that checks if an actual value satisfies a condition.
-  # Sub-types must implement `#match?`, `#message`, and `#negated_message`.
-  # Those methods accept a `ValueExpectationPartial` to work with.
-  abstract struct ConditionMatcher < Matcher
-  end
-end

src/spectator/matchers/empty_matcher.cr

@@ -1,9 +1,9 @@
-require "./value_matcher"
+require "./matcher"
 
 module Spectator::Matchers
   # Matcher that tests whether a collection is empty.
   # The values are checked with the `#empty?` method.
-  struct EmptyMatcher < ConditionMatcher
+  struct EmptyMatcher < Matcher
     # Creates the matcher.
     def initialize
       super("empty?")

src/spectator/matchers/nil_matcher.cr

@@ -1,9 +1,9 @@
-require "./value_matcher"
+require "./matcher"
 
 module Spectator::Matchers
   # Common matcher that tests whether a value is nil.
   # The values are compared with the `#nil?` method.
-  struct NilMatcher < ConditionMatcher
+  struct NilMatcher < Matcher
     # Creates the matcher.
     def initialize
       super("nil?")

src/spectator/matchers/type_matcher.cr

@@ -1,9 +1,9 @@
-require "./condition_matcher"
+require "./matcher"
 
 module Spectator::Matchers
   # Matcher that tests a value is of a specified type.
   # The values are compared with the `#is_a?` method.
-  struct TypeMatcher(Expected) < ConditionMatcher
+  struct TypeMatcher(Expected) < Matcher
     # Creates the type matcher.
     # The `Expected` type param will be used to populate the underlying label.
     def initialize