Op-Amp - Sharing Non-Inverting Inputs in a two stage amplifier
The TL064 op amp has a JFET input and the bias current is very low. R44 and R47 serve no purpose. The only reason for these resistors is to reduce errors caused by the input bias currents. However, the small input bias current going through these resistors will produce an offset voltage which is much less than the input offset voltage of the op amps. The resistors might be useful if the op amp had bipolar transistor inputs but this is not the case. The only effect of the resistors will be to add some noise in the circuit.

BTW, if the resistors were used to reduce input bias current error, this technique relies on the input bias currents on the - and + inputs to be somewhat matching. This tends to be the case for bipolar input op amps. However, using the same resistor for two op amps means the offset voltage created by one op amp input currents will be an error for the other op amp. This is the main reason to not connect the + inputs from two op amps together to one compensating resistor.