Remove unused code
Remove unused code

The parsing code will analyze the previous word relative to the
current offset of the text caret. As such, it is not necessary to use
a line's offset to determine whether the text caret is positioned at
a place that should be providing completion items or not.

Signed-off-by: Remy Suen <553f7e7fc51e9ff47ae89d5a0ebd06651241b998@gmail.com>

rcjsuen/dockerfile-language-server-nodejs,rcjsuen/dockerfile-language-server-nodejs