Fix #1571

the Class Gen_compressed in build.py has two gen_accessible method.
The problem was produced by the commit 2bd056a and the PR #1243.

Delete the accidental incoming L266-L292 to fix that problem.

build.py

@@ -267,33 +267,6 @@ class Gen_compressed(threading.Thread):
 
     self.do_compile(params, target_filename, filenames, "")
 
-  def gen_accessible(self):
-    target_filename = "blockly_accessible_compressed.js"
-    # Define the parameters for the POST request.
-    params = [
-        ("compilation_level", "SIMPLE_OPTIMIZATIONS"),
-        ("use_closure_library", "true"),
-        ("language_out", "ES5"),
-        ("output_format", "json"),
-        ("output_info", "compiled_code"),
-        ("output_info", "warnings"),
-        ("output_info", "errors"),
-        ("output_info", "statistics"),
-      ]
-
-    # Read in all the source files.
-    filenames = calcdeps.CalculateDependencies(self.search_paths,
-        [os.path.join("accessible", "app.component.js")])
-    for filename in filenames:
-      # Filter out the Closure files (the compiler will add them).
-      if filename.startswith(os.pardir + os.sep):  # '../'
-        continue
-      f = open(filename)
-      params.append(("js_code", "".join(f.readlines())))
-      f.close()
-
-    self.do_compile(params, target_filename, filenames, "")
-
   def gen_blocks(self):
     target_filename = "blocks_compressed.js"
     # Define the parameters for the POST request.