WHY

gawk -v min="10000000000" "NR==FNR {min=min>$2?$2:min} NR>FNR && $2!=min" 1.txt 1.txt > 2.txt
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PowerShell "$arr = gc 1.txt -ReadCount 0; $min = ($arr -replace '^\S+' | measure -Min).Minimum; $arr -notMatch ('\b' + $min + '$')" > 2.txt
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