Revert "Fix context tool"

It is fixed in crystal-lang#3751. Yeah, we need no hack for it!

This reverts commit 1d26d45.

src/compiler/crystal/tools/context.cr

@@ -104,7 +104,6 @@ module Crystal
       @contexts = Array(HashStringType).new
       @context = HashStringType.new
       @def_with_yield = nil
-      @in_defs = false
     end
 
     def process_instance_defs(type)
@@ -158,15 +157,13 @@ module Crystal
     end
 
     def process(result : Compiler::Result)
-      @in_defs = true
       result.program.def_instances.each_value do |typed_def|
         visit_and_append_context typed_def
       end
 
       result.program.types?.try &.values.each do |type|
         process_type type
       end
-      @in_defs = false
 
       if @contexts.empty?
         @context = HashStringType.new
@@ -292,10 +289,9 @@ module Crystal
     private def contains_target(node)
       if loc_start = node.location
         loc_end = node.end_location || loc_start
-        # if it is not between, it could be the case that node is the top level Expressions,
+        # if it is not between, it could be the case that node is the top level Expressions
         # in which the (start) location might be in one file and the end location in another.
-        @target_location.between?(loc_start, loc_end) || (!@in_defs && loc_start.filename != loc_end.filename)
-        # When node generated by macro and macro has yielding block, it also makes `loc_start.filename != loc_end.filename` true.
+        @target_location.between?(loc_start, loc_end) || loc_start.filename != loc_end.filename
       else
         # if node has no location, assume they may contain the target.
         # for example with the main expressions ast node this matters