Remove locking config (#3519)

This flag is no longer needed. It was used to control file locking on the *.data files.

Co-authored-by: Sebastian Carlos <sebastiancarlos@gmail.com>

src/Context.cpp

@@ -78,7 +78,6 @@ std::string configurationDefaults =
   "\n"
   "# Files\n"
   "data.location=~/.task\n"
-  "locking=1                                      # Use file-level locking\n"
   "gc=1                                           # Garbage-collect data files - DO NOT CHANGE unless you are sure\n"
   "exit.on.missing.db=0                           # Whether to exit if ~/.task is not found\n"
   "hooks=1                                        # Master control switch for hooks\n"

src/commands/CmdDiagnostics.cpp

@@ -177,12 +177,6 @@ int CmdDiagnostics::execute (std::string& output)
         << env
         << '\n';
 
-  out << "    Locking: "
-      << (Context::getContext ().config.getBoolean ("locking")
-           ? "Enabled"
-           : "Disabled")
-      << '\n';
-
   out << "         GC: "
       << (Context::getContext ().config.getBoolean ("gc")
            ? "Enabled"

src/commands/CmdShow.cpp

@@ -176,7 +176,6 @@ int CmdShow::execute (std::string& output)
     " limit"
     " list.all.projects"
     " list.all.tags"
-    " locking"
     " nag"
     " news.version"
     " obfuscate"