The #Royals  announced that they have requested unconditional release waivers on INF Elliot Johnson this afternoon.
— Kansas City Royals (@Royals) August 19, 2013 
THURSDAY: The Royals have created roster space for the recently acquired Emilio Bonifacio by designating infielder Elliot Johnson for assignment, according to Bob Dutton of the Kansas City Star.
#Royals  clear space for UTL Emilio Bonifacio by designating Elliot Johnson for assignment.
— Bob Dutton (@Royals_Report) August 15, 2013 
Johnson came over from the Rays this offseason as part of the James Shields-Wil Myers blockbuster.
The 29-year-old Johnson batted .179/.218/.241 in 173 plate appearances for the Royals this season — a steep decline from last season’s .242/.304/.350 in 331 plate appearances. While Johnson offered little with the bat this season, he did provide some value on defense and on the basepaths. Both UZR/150 (+15.9) and The Fielding Bible (nine runs above average) loved his work at second base at second base this season, and he went 14-for-14 in stolen base attempts.
Source: MLB Trade Rumors