This was the Donald Trump that Republican leaders have been waiting for: focused, systematic and, despite spraying a stream of falsehoods, ruthless in trying to destroy one person — Hillary Clinton. Absent from a Trump campaign speech here Wednesday were references to a federal judge’s Mexican American heritage or ethnic slurs such as “Pocahontas.” The presumptive GOP presidential nominee also left out the colorful play-by-play of his exploits in the primaries and did not threaten his fellow Republicans; in fact, he never mentioned them at all. Instead, Trump zeroed in on the “rigged” (a word he uttered 10 times) economic and political systems. The billionaire mogul promised to be a fixer, making America richer, bigger, better and stronger. And he portrayed Clinton, the likely Democratic nominee, as a “world-class liar” and a danger to the country.