If you run this command:
$ xcode-select -p
it will print to screen as below:
/Volumes/Xcode/Xcode44-DP7.app/Contents/Developer ( in your case)
To change it to default, you can do as follow:
$ sudo xcode-select -r
Password:
Check again:
$ xcode-select -p
/Applications/Xcode.app/Contents/Developer
Get more information from:
$ xcode-select
Usage: xcode-select [options]
Print or change the path to the active developer directory. This directory
controls which tools are used for the Xcode command line tools (for example,
xcodebuild) as well as the BSD development commands (such as cc and make).
Options:
-h, --help print this help message and exit
-p, --print-path print the path of the active developer directory
-s <path>, --switch <path> set the path for the active developer directory
-v, --version print the xcode-select version
-r, --reset reset to the default command line tools path