Fix trailing whitespace & empty lines (#6385)

Fix formatting in various files

Co-authored-by: Colin Seymour <colin@github.com>

ext/linguist/lex.linguist_yy.c

@@ -2807,6 +2807,3 @@ void yyfree (void * ptr , yyscan_t yyscanner)
 #define YYTABLES_NAME "yytables"
 
 #line 173 "tokenizer.l"
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ext/linguist/tokenizer.l

@@ -171,4 +171,3 @@
 .|\n                              { /* nothing */ }
 
 %%
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script/build-grammars-tarball

@@ -5,5 +5,3 @@ cd "$(dirname "$0")/.."
 rm -rf ./linguist-grammars
 ./script/grammar-compiler compile -o linguist-grammars || true
 tar -zcvf linguist-grammars.tar.gz linguist-grammars
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