bash remove line from file if contains code example

Example 1: sed remove line containing

sed '/pattern to match/d' ./infile

Example 2: delete lines text file linux

sed -i '' '/pattern to match/d' ./infile

Example 3: remove line with pattern

Use d option at the end of sed command string for deleting line of matches.
sed -i "" "s/matching_pattern/d" file.txt