Remove binding-of-caller shell

Gemfile

@@ -341,7 +341,6 @@ group :development do
 
   # Better errors handler
   gem 'better_errors', '~> 2.7.1'
-  gem 'binding_of_caller', '~> 0.8.0'
 
   # thin instead webrick
   gem 'thin', '~> 1.7.0'

Gemfile.lock

@@ -135,8 +135,6 @@ GEM
       rack (>= 0.9.0)
     bindata (2.4.3)
     binding_ninja (0.2.3)
-    binding_of_caller (0.8.0)
-      debug_inspector (>= 0.0.1)
     bootsnap (1.4.6)
       msgpack (~> 1.0)
     bootstrap_form (4.2.0)
@@ -218,7 +216,6 @@ GEM
       octokit (~> 4.7)
       terminal-table (~> 1)
     database_cleaner (1.7.0)
-    debug_inspector (0.0.3)
     debugger-ruby_core_source (1.3.8)
     deckar01-task_list (2.3.1)
       html-pipeline
@@ -1263,7 +1260,6 @@ DEPENDENCIES
   benchmark-ips (~> 2.3.0)
   benchmark-memory (~> 0.1)
   better_errors (~> 2.7.1)
-  binding_of_caller (~> 0.8.0)
   bootsnap (~> 1.4.6)
   bootstrap_form (~> 4.2.0)
   brakeman (~> 4.2)