How to remove command from latex file using search and replace in Vim?

How to remove command from latex file using search and replace in Vim?

References

Reference NO 1

http://stackoverflow.com/questions/13634238/how-to-remove-command-from-latex-file-using-search-and-replace-in-vim

Reference NO 2

http://stackoverflow.com/questions/2465156/how-does-one-escape-backslashes-and-forward-slashes-in-vim-find-search

Reference NO 3

https://wiki.archlinux.org/index.php/Vim

Reference NO 4

http://vim-latex.sourceforge.net/documentation/latex-suite.html

Reference NO 5

http://vim.wikia.com/wiki/Remove_unwanted_empty_lines

Reference NO 6

http://alvinalexander.com/blog/post/linux-unix/how-search-delete-lines-vi-vim-editor

Reference NO 7

http://www.cs.iastate.edu/~cs104/notes/vim.html

Reference NO 8

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