Definition: In this task, you need to remove all words of a given length in the sentence. The number of letters in a word determine its length, for example, the length of the word "apple" is 5.
Input: Sentence: 'a baseball player getting ready to bat while a catcher and umpire wait behind him and people watch'. Remove all words of length '1' in the given sentence.

baseball player getting ready to bat while catcher and umpire wait behind him and people watch