No, uninstalling 32-bit Java will not affect performance.
The factor that increases performance is if Minecraft is set to use 64-bit Java (Which I think it does by default). The fact that 32-bit Java is installed will not necessarily decrease performance.
I personally have 32-bit Java installed because I use Google Chrome which is 32-bit.
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The factor that increases performance is if Minecraft is set to use 64-bit Java (Which I think it does by default). The fact that 32-bit Java is installed will not necessarily decrease performance.
I personally have 32-bit Java installed because I use Google Chrome which is 32-bit.