remove lib versioning for internal plugins

Those objects do not have a versioned API by themselves.
This fixes issues with duplicate deployment (OSX, Linux bundles: cp) and
ardour listing control-surfaces multiple times (file index plugin dir).

libs/surfaces/control_protocol/wscript

@@ -2,13 +2,6 @@
 from waflib.extras import autowaf as autowaf
 import os
 
-# Library version (UNIX style major, minor, micro)
-# major increment <=> incompatible changes
-# minor increment <=> compatible changes (additions)
-# micro increment <=> no interface changes
-APPNAME = 'libardour_cp'
-LIBARDOUR_CP_LIB_VERSION = '4.1.0'
-
 # Mandatory variables
 top = '.'
 out = 'build'
@@ -40,7 +33,6 @@ def build(bld):
     obj.name         = 'libardour_cp'
     obj.target       = 'ardourcp'
     obj.use          = 'libardour'
-    obj.vnum         = LIBARDOUR_CP_LIB_VERSION
     obj.install_path = bld.env['LIBDIR']
 
 def shutdown():