dt-bindings: clock: qcom,gcc-msm8998: drop core_bi_pll_test_se

The test clock apparently it's not used by anyone upstream. Remove it.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221228185237.3111988-2-dmitry.baryshkov@linaro.org

Documentation/devicetree/bindings/clock/qcom,gcc-msm8998.yaml

@@ -25,7 +25,6 @@ properties:
       - description: Board XO source
       - description: Sleep clock source
       - description: Audio reference clock (Optional clock)
-      - description: PLL test clock source (Optional clock)
     minItems: 2
 
   clock-names:
@@ -33,7 +32,6 @@ properties:
       - const: xo
       - const: sleep_clk
       - const: aud_ref_clk # Optional clock
-      - const: core_bi_pll_test_se # Optional clock
     minItems: 2
 
 required:
@@ -57,11 +55,9 @@ examples:
       reg = <0x00100000 0xb0000>;
       clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
                <&sleep>,
-               <0>,
                <0>;
       clock-names = "xo",
                     "sleep_clk",
-                    "aud_ref_clk",
-                    "core_bi_pll_test_se";
+                    "aud_ref_clk";
     };
 ...